Merge branch 'eugenp:master' into master

README.md

@@ -33,7 +33,9 @@ Next, they are segregated further on the basis of the tests that we want to exec
 
 Additionally, there are 2 profiles dedicated for JDK9 and above builds.
 
-Therefore, we have a total of 8 profiles:
+We also have a parents profile to build only parent modules.
+
+Therefore, we have a total of 9 profiles:
 
 | Profile                    | Includes                    | Type of test enabled |
 | -------------------------- | --------------------------- | -------------------- |
@@ -45,6 +47,7 @@ Therefore, we have a total of 8 profiles:
 | integration-heavy          | Heavy/long running projects | *IntegrationTest     |
 | default-jdk9-and-above     | JDK9 and above projects     | *UnitTest            |
 | integration-jdk9-and-above | JDK9 and above projects     | *IntegrationTest     |
+| parents                    | Set of parent modules       | None                 |
 
 Building the project
 ====================

akka-modules/akka-http/pom.xml

@@ -36,6 +36,7 @@
         </dependency>
     </dependencies>
 
+
     <properties>
         <akka.http.version>10.0.11</akka.http.version>
         <akka.stream.version>2.5.11</akka.stream.version>

annotations/annotation-processing/pom.xml

@@ -21,6 +21,7 @@
         </dependency>
     </dependencies>
 
+
     <properties>
         <auto-service.version>1.0-rc2</auto-service.version>
     </properties>

apache-httpclient/pom.xml

@@ -54,6 +54,42 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents.core5</groupId>
+            <artifactId>httpcore5</artifactId>
+            <version>${httpcore5.version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-logging</artifactId>
+                    <groupId>commons-logging</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.httpcomponents.client5</groupId>
+            <artifactId>httpclient5-fluent</artifactId>
+            <version>${httpclient5-fluent.version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-logging</artifactId>
+                    <groupId>commons-logging</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.httpcomponents.client5</groupId>
+            <artifactId>httpclient5</artifactId>
+            <version>${httpclient5.version}</version>
+            <exclusions>
+                <exclusion>
+                    <artifactId>commons-logging</artifactId>
+                    <groupId>commons-logging</groupId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+
         <dependency>
             <groupId>com.github.tomakehurst</groupId>
             <artifactId>wiremock</artifactId>
@@ -78,6 +114,10 @@
         <!-- testing -->
         <wiremock.version>2.5.1</wiremock.version>
         <httpclient.version>4.5.8</httpclient.version> <!-- 4.3.6 --> <!-- 4.4-beta1 -->
+        <!-- http client & core 5 -->
+        <httpcore5.version>5.2</httpcore5.version>
+        <httpclient5.version>5.2</httpclient5.version>
+        <httpclient5-fluent.version>5.2</httpclient5-fluent.version>
     </properties>
 
 </project>

apache-httpclient/src/test/java/com/baeldung/httpclient/HttpClientMultipartLiveTest.java

@@ -1,19 +1,24 @@
 package com.baeldung.httpclient;
 
-import org.apache.http.HttpEntity;
-import org.apache.http.HttpStatus;
-import org.apache.http.client.methods.CloseableHttpResponse;
-import org.apache.http.client.methods.HttpPost;
-import org.apache.http.entity.ContentType;
-import org.apache.http.entity.mime.HttpMultipartMode;
-import org.apache.http.entity.mime.MultipartEntityBuilder;
-import org.apache.http.entity.mime.content.FileBody;
-import org.apache.http.entity.mime.content.StringBody;
-import org.apache.http.impl.client.CloseableHttpClient;
-import org.apache.http.impl.client.HttpClientBuilder;
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import org.apache.hc.client5.http.classic.methods.HttpPost;
+import org.apache.hc.client5.http.entity.mime.FileBody;
+import org.apache.hc.client5.http.entity.mime.HttpMultipartMode;
+import org.apache.hc.client5.http.entity.mime.MultipartEntityBuilder;
+import org.apache.hc.client5.http.entity.mime.StringBody;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
+import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
+import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
+
+import org.apache.hc.core5.http.ContentType;
+import org.apache.hc.core5.http.HttpEntity;
+import org.apache.hc.core5.http.HttpStatus;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -22,14 +27,10 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.URL;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 
-import static org.hamcrest.Matchers.equalTo;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
+import com.baeldung.httpclient.handler.CustomHttpClientResponseHandler;
 
-public class HttpClientMultipartLiveTest {
+class HttpClientMultipartLiveTest {
 
     // No longer available
     // private static final String SERVER = "http://echo.200please.com";
@@ -38,41 +39,16 @@ public class HttpClientMultipartLiveTest {
     private static final String TEXTFILENAME = "temp.txt";
     private static final String IMAGEFILENAME = "image.jpg";
     private static final String ZIPFILENAME = "zipFile.zip";
-    private static final Logger LOGGER = Logger.getLogger("com.baeldung.httpclient.HttpClientMultipartLiveTest");
-    private CloseableHttpClient client;
     private HttpPost post;
     private BufferedReader rd;
-    private CloseableHttpResponse response;
 
-    @Before
-    public final void before() {
-        client = HttpClientBuilder.create()
-          .build();
+    @BeforeEach
+    public void before() {
         post = new HttpPost(SERVER);
     }
 
-    @After
-    public final void after() throws IllegalStateException, IOException {
-        post.completed();
-        try {
-            client.close();
-        } catch (final IOException e1) {
-            LOGGER.log(Level.SEVERE, e1.getMessage(), e1);
-            throw e1;
-        }
-        try {
-            rd.close();
-        } catch (final IOException e) {
-            LOGGER.log(Level.SEVERE, e.getMessage(), e);
-            throw e;
-        }
-        ResponseUtil.closeResponse(response);
-    }
-
-    // tests
-
     @Test
-    public final void givenFileandMultipleTextParts_whenUploadwithAddPart_thenNoExceptions() throws IOException {
+    void givenFileandMultipleTextParts_whenUploadwithAddPart_thenNoExceptions() throws IOException {
         final URL url = Thread.currentThread()
           .getContextClassLoader()
           .getResource("uploads/" + TEXTFILENAME);
@@ -83,53 +59,61 @@ public class HttpClientMultipartLiveTest {
         final StringBody stringBody2 = new StringBody("This is message 2", ContentType.MULTIPART_FORM_DATA);
         //
         final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
-        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
+        builder.setMode(HttpMultipartMode.LEGACY);
         builder.addPart("file", fileBody);
         builder.addPart("text1", stringBody1);
         builder.addPart("text2", stringBody2);
         final HttpEntity entity = builder.build();
-        //
-        post.setEntity(entity);
-        response = client.execute(post);
 
-        final int statusCode = response.getStatusLine()
-          .getStatusCode();
-        final String responseString = getContent();
-        final String contentTypeInHeader = getContentTypeHeader();
-        assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-        // assertTrue(responseString.contains("Content-Type: multipart/form-data;"));
-        assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-        System.out.println(responseString);
-        System.out.println("POST Content Type: " + contentTypeInHeader);
+        post.setEntity(entity);
+        try(CloseableHttpClient client = HttpClientBuilder.create()
+            .build();
+
+            CloseableHttpResponse response = (CloseableHttpResponse) client
+                .execute(post, new CustomHttpClientResponseHandler())){
+            final int statusCode = response.getCode();
+            final String responseString = getContent(response.getEntity());
+            final String contentTypeInHeader = getContentTypeHeader();
+
+            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
+            System.out.println(responseString);
+            System.out.println("POST Content Type: " + contentTypeInHeader);
+        }
     }
 
     @Test
-    public final void givenFileandTextPart_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoExeption() throws IOException {
+    void givenFileandTextPart_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoExeption() throws IOException {
         final URL url = Thread.currentThread()
           .getContextClassLoader()
           .getResource("uploads/" + TEXTFILENAME);
         final File file = new File(url.getPath());
         final String message = "This is a multipart post";
         final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
-        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
+        builder.setMode(HttpMultipartMode.LEGACY);
         builder.addBinaryBody("file", file, ContentType.DEFAULT_BINARY, TEXTFILENAME);
         builder.addTextBody("text", message, ContentType.DEFAULT_BINARY);
         final HttpEntity entity = builder.build();
         post.setEntity(entity);
-        response = client.execute(post);
-        final int statusCode = response.getStatusLine()
-          .getStatusCode();
-        final String responseString = getContent();
-        final String contentTypeInHeader = getContentTypeHeader();
-        assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-        // assertTrue(responseString.contains("Content-Type: multipart/form-data;"));
-        assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-        System.out.println(responseString);
-        System.out.println("POST Content Type: " + contentTypeInHeader);
+
+        try(CloseableHttpClient client = HttpClientBuilder.create()
+            .build();
+
+            CloseableHttpResponse response = (CloseableHttpResponse) client
+                .execute(post, new CustomHttpClientResponseHandler())){
+
+            final int statusCode = response.getCode();
+            final String responseString = getContent(response.getEntity());
+            final String contentTypeInHeader = getContentTypeHeader();
+            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
+            System.out.println(responseString);
+            System.out.println("POST Content Type: " + contentTypeInHeader);
+        }
     }
 
     @Test
-    public final void givenFileAndInputStreamandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
+    void givenFileAndInputStreamandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
         final URL url = Thread.currentThread()
           .getContextClassLoader()
           .getResource("uploads/" + ZIPFILENAME);
@@ -140,64 +124,75 @@ public class HttpClientMultipartLiveTest {
         final File file = new File(url2.getPath());
         final String message = "This is a multipart post";
         final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
-        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
+        builder.setMode(HttpMultipartMode.STRICT);
         builder.addBinaryBody("file", file, ContentType.DEFAULT_BINARY, IMAGEFILENAME);
         builder.addBinaryBody("upstream", inputStream, ContentType.create("application/zip"), ZIPFILENAME);
         builder.addTextBody("text", message, ContentType.TEXT_PLAIN);
         final HttpEntity entity = builder.build();
         post.setEntity(entity);
-        response = client.execute(post);
-        final int statusCode = response.getStatusLine()
-          .getStatusCode();
-        final String responseString = getContent();
-        final String contentTypeInHeader = getContentTypeHeader();
-        assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-        // assertTrue(responseString.contains("Content-Type: multipart/form-data;"));
-        assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-        System.out.println(responseString);
-        System.out.println("POST Content Type: " + contentTypeInHeader);
-        inputStream.close();
+
+        try(CloseableHttpClient client = HttpClientBuilder.create()
+            .build();
+
+            CloseableHttpResponse response = (CloseableHttpResponse) client
+                .execute(post, new CustomHttpClientResponseHandler())){
+
+            final int statusCode = response.getCode();
+            final String responseString = getContent(response.getEntity());
+            final String contentTypeInHeader = getContentTypeHeader();
+            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
+            System.out.println(responseString);
+            System.out.println("POST Content Type: " + contentTypeInHeader);
+            inputStream.close();
+        }
     }
 
     @Test
-    public final void givenCharArrayandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
+    void givenCharArrayandText_whenUploadwithAddBinaryBodyandAddTextBody_ThenNoException() throws IOException {
         final String message = "This is a multipart post";
         final byte[] bytes = "binary code".getBytes();
         final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
-        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
+        builder.setMode(HttpMultipartMode.STRICT);
         builder.addBinaryBody("file", bytes, ContentType.DEFAULT_BINARY, TEXTFILENAME);
         builder.addTextBody("text", message, ContentType.TEXT_PLAIN);
         final HttpEntity entity = builder.build();
         post.setEntity(entity);
-        response = client.execute(post);
-        final int statusCode = response.getStatusLine()
-          .getStatusCode();
-        final String responseString = getContent();
-        final String contentTypeInHeader = getContentTypeHeader();
-        assertThat(statusCode, equalTo(HttpStatus.SC_OK));
-        // assertTrue(responseString.contains("Content-Type: multipart/form-data;"));
-        assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
-        System.out.println(responseString);
-        System.out.println("POST Content Type: " + contentTypeInHeader);
+
+        try(CloseableHttpClient client = HttpClientBuilder.create()
+            .build();
+
+            CloseableHttpResponse response = (CloseableHttpResponse) client
+                .execute(post, new CustomHttpClientResponseHandler())){
+
+            final int statusCode = response.getCode();
+            final String responseString = getContent(response.getEntity());
+            final String contentTypeInHeader = getContentTypeHeader();
+            assertThat(statusCode, equalTo(HttpStatus.SC_OK));
+            assertTrue(contentTypeInHeader.contains("Content-Type: multipart/form-data;"));
+            System.out.println(responseString);
+            System.out.println("POST Content Type: " + contentTypeInHeader);
+        }
+
     }
 
     // UTIL
 
-    private String getContent() throws IOException {
-        rd = new BufferedReader(new InputStreamReader(response.getEntity()
-          .getContent()));
+    private String getContent(HttpEntity httpEntity) throws IOException {
+        rd = new BufferedReader(new InputStreamReader(httpEntity.getContent()));
         String body = "";
         StringBuilder content = new StringBuilder();
         while ((body = rd.readLine()) != null) {
-            content.append(body).append("\n");
+            content.append(body)
+                .append("\n");
         }
-        return content.toString().trim();
+        return content.toString()
+            .trim();
     }
 
-    private String getContentTypeHeader() throws IOException {
+    private String getContentTypeHeader() {
         return post.getEntity()
-          .getContentType()
-          .toString();
+            .getContentType();
     }
 
 }

apache-httpclient/src/test/java/com/baeldung/httpclient/handler/CustomHttpClientResponseHandler.java

@@ -0,0 +1,11 @@
+package com.baeldung.httpclient.handler;
+
+import org.apache.hc.core5.http.ClassicHttpResponse;
+import org.apache.hc.core5.http.io.HttpClientResponseHandler;
+
+public class CustomHttpClientResponseHandler implements HttpClientResponseHandler<ClassicHttpResponse> {
+    @Override
+    public ClassicHttpResponse handleResponse(ClassicHttpResponse response) {
+        return response;
+    }
+}

axon/src/test/java/com/baeldung/axon/gui/OrderRestEndpointManualTest.java

@@ -27,7 +27,8 @@ import java.util.concurrent.TimeUnit;
 import static org.junit.jupiter.api.Assertions.*;
 
 @SpringBootTest(classes = OrderApplication.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-class OrderRestEndpointIntegrationTest {
+//marked as manual as the test is unstable on Jenkins due to low resources
+class OrderRestEndpointManualTest {
 
     @LocalServerPort
     private int port;

core-java-modules/core-java-11-3/README.md

@@ -5,3 +5,4 @@ This module contains articles about Java 11 core features
 ### Relevant articles
 - [Adding Parameters to Java HttpClient Requests](https://www.baeldung.com/java-httpclient-request-parameters)
 - [Writing a List of Strings Into a Text File](https://www.baeldung.com/java-list-to-text-file)
+- [Java HttpClient – Map JSON Response to Java Class](https://www.baeldung.com/java-httpclient-map-json-response)

core-java-modules/core-java-19/README.md

@@ -1,2 +1,3 @@
 ## Relevant Articles
 - [Record Patterns in Java 19](https://www.baeldung.com/java-19-record-patterns)
+- [Structured Concurrency in Java 19](https://www.baeldung.com/java-structured-concurrency)

core-java-modules/core-java-arrays-convert/src/test/java/com/baeldung/array/conversions/StringArrayToIntArrayUnitTest.java

@@ -0,0 +1,63 @@
+package com.baeldung.array.conversions;
+
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+
+public class StringArrayToIntArrayUnitTest {
+    private final String[] stringArray = new String[] { "1", "2", "3", "4", "5", "6", "42" };
+    private final int[] expected = new int[] { 1, 2, 3, 4, 5, 6, 42 };
+
+    private final String[] stringArrayWithInvalidNum = new String[] { "1", "2", "hello", "4", "world", "6", "42" };
+    private final int[] expectedWithInvalidInput = new int[] { 1, 2, Integer.MIN_VALUE, 4, Integer.MIN_VALUE, 6, 42 };
+
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+
+    @Test
+    void givenStringArray_whenUseStreamApi_shouldGetExpectedIntArray() {
+        int[] result = Arrays.stream(stringArray).mapToInt(Integer::parseInt).toArray();
+        assertArrayEquals(expected, result);
+    }
+
+    @Test
+    void givenStringArrayWithInvalidNum_whenUseStreamApi_shouldGetExpectedIntArray() {
+        int[] result = Arrays.stream(stringArrayWithInvalidNum).mapToInt(s -> {
+            try {
+                return Integer.parseInt(s);
+            } catch (NumberFormatException ex) {
+                logger.warn("Invalid number format detected: {}, use Int.MinValue as the fallback", s);
+                return Integer.MIN_VALUE;
+            }
+        }).toArray();
+        assertArrayEquals(expectedWithInvalidInput, result);
+    }
+
+    @Test
+    void givenStringArray_whenConvertInLoop_shouldGetExpectedIntArray() {
+        int[] result = new int[stringArray.length];
+        for (int i = 0; i < stringArray.length; i++) {
+            result[i] = Integer.parseInt(stringArray[i]);
+        }
+        assertArrayEquals(expected, result);
+    }
+
+    @Test
+    void givenStringArrayWithInvalidNum_whenConvertInLoop_shouldGetExpectedIntArray() {
+        int[] result = new int[stringArrayWithInvalidNum.length];
+        for (int i = 0; i < stringArrayWithInvalidNum.length; i++) {
+            try {
+                result[i] = Integer.parseInt(stringArrayWithInvalidNum[i]);
+            } catch (NumberFormatException exception) {
+                logger.warn("Invalid number format detected: [{}], use Int.MinValue as the fallback", stringArrayWithInvalidNum[i]);
+                result[i] = Integer.MIN_VALUE;
+            }
+        }
+
+        assertArrayEquals(expectedWithInvalidInput, result);
+    }
+}

core-java-modules/core-java-functional/src/test/java/com/baeldung/callbackfunctions/AsynchronousCallbackUnitTest.java

@@ -6,8 +6,7 @@ import com.baeldung.callbackfunctions.EventListener;
 import com.baeldung.callbackfunctions.asynchronous.AsynchronousEventConsumer;
 import com.baeldung.callbackfunctions.asynchronous.AsynchronousEventListenerImpl;
 
-import static org.mockito.Mockito.times;
-import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.*;
 
 public class AsynchronousCallbackUnitTest {
 
@@ -17,6 +16,6 @@ public class AsynchronousCallbackUnitTest {
         AsynchronousEventConsumer asynchronousEventListenerConsumer = new AsynchronousEventConsumer(listener);
         asynchronousEventListenerConsumer.doAsynchronousOperation();
 
-        verify(listener, times(1)).onTrigger();
+        verify(listener, timeout(1000).times(1)).onTrigger();
     }
 }

core-java-modules/core-java-functional/src/test/java/com/baeldung/callbackfunctions/ConsumerCallbackUnitTest.java

@@ -3,18 +3,25 @@ package com.baeldung.callbackfunctions;
 import org.junit.jupiter.api.Test;
 import com.baeldung.callbackfunctions.ConsumerCallback;
 
+import java.util.concurrent.atomic.AtomicInteger;
+
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class ConsumerCallbackUnitTest {
 
     @Test
-    public void whenIncreasingInitialAgeByGivenValueThroughCallback_shouldIncreaseAge(){
+    void whenIncreasingInitialAgeByGivenValueThroughCallback_shouldIncreaseAge(){
         ConsumerCallback consumerCallback = new ConsumerCallback();
-        consumerCallback.getAge(20, (initialAge) -> {
-            int ageDifference = 10;
+        int ageDifference = 10;
+        AtomicInteger newAge1 = new AtomicInteger();
+        int initialAge = 20;
+        consumerCallback.getAge(initialAge, (initialAge1) -> {
             consumerCallback.increaseAge(initialAge, ageDifference, (newAge) -> {
-                assertEquals(initialAge + ageDifference, newAge);
+                System.out.printf("New age ==> %s", newAge);
+                newAge1.set(newAge);
+
             });
         });
+        assertEquals(initialAge + ageDifference, newAge1.get());
     }
 }

core-java-modules/core-java-lang-5/README.md

@@ -14,3 +14,4 @@ This module contains articles about core features in the Java language
 - [Convert Between int and char in Java](https://www.baeldung.com/java-convert-int-char)
 - [Converting a Number from One Base to Another in Java](https://www.baeldung.com/java-converting-a-number-from-one-base-to-another)
 - [Check if Command-Line Arguments Are Null in Java](https://www.baeldung.com/java-check-command-line-args)
+- [Determine if a Class Implements an Interface in Java](https://www.baeldung.com/java-check-class-implements-interface)

core-java-modules/core-java-lang-5/pom.xml

@@ -13,6 +13,12 @@
         <artifactId>core-java-modules</artifactId>
         <version>0.0.1-SNAPSHOT</version>
     </parent>
+    
+    <properties>
+        <commons-lang3.version>3.12.0</commons-lang3.version>
+        <reflections.version>0.10.2</reflections.version>
+    </properties>
+    
 
     <build>
         <finalName>core-java-lang-5</finalName>
@@ -24,4 +30,18 @@
         </resources>
     </build>
 
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>${commons-lang3.version}</version>
+        </dependency>
+    
+        <dependency>
+            <groupId>org.reflections</groupId>
+            <artifactId>reflections</artifactId>
+            <version>${reflections.version}</version>
+        </dependency>
+    </dependencies>
+    
 </project>

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/ChildClass1.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public class ChildClass1 implements ChildInterface1 {
+
+}

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/ChildClass2.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public class ChildClass2 implements ChildInterface2 {
+
+}

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/ChildInterface1.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public interface ChildInterface1 extends MasterInterface {
+
+}

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/ChildInterface2.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public interface ChildInterface2 extends MasterInterface {
+
+}

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/MasterClass.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public class MasterClass implements MasterInterface {
+
+}

core-java-modules/core-java-lang-5/src/main/java/com/baeldung/checkinterface/MasterInterface.java

@@ -0,0 +1,5 @@
+package com.baeldung.checkinterface;
+
+public interface MasterInterface {
+
+}

core-java-modules/core-java-lang-5/src/test/java/com/baeldung/checkinterface/CheckInterfaceUnitTest.java

@@ -0,0 +1,154 @@
+package com.baeldung.checkinterface;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.apache.commons.lang3.ClassUtils;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.reflections.ReflectionUtils;
+import org.reflections.Reflections;
+
+public class CheckInterfaceUnitTest {
+    
+    protected static Reflections reflections;
+    
+    @BeforeAll
+    public static void initializeReflectionsLibrary() {
+        
+        reflections = new Reflections("com.baeldung.checkinterface");
+    }
+
+    @Test
+    public void whenUsingReflectionGetInterfaces_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        List<Class<?>> interfaces = Arrays.asList(childClass2.getClass().getInterfaces());
+        
+        assertEquals(1, interfaces.size());
+        assertTrue(interfaces.contains(ChildInterface2.class));
+    }
+    
+    @Test
+    public void whenUsingReflectionGetInterfaces_thenParentInterfaceIsNotFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        List<Class<?>> interfaces = Arrays.asList(childClass2.getClass().getInterfaces());
+        
+        assertFalse(interfaces.contains(MasterInterface.class));
+    }
+    
+    @Test
+    public void whenUsingReflectionGetInterfacesRecursively_thenParentInterfaceIsFound() {
+        
+        Set<Class<?>> interfaces = getAllExtendedOrImplementedInterfacesRecursively(ChildClass2.class);
+        
+        assertTrue(interfaces.contains(ChildInterface2.class));
+        assertTrue(interfaces.contains(MasterInterface.class));
+    }
+    
+    @Test
+    public void whenUsingReflectionIsAssignableFrom_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(ChildInterface2.class.isAssignableFrom(childClass2.getClass()));
+    }
+    
+    @Test
+    public void whenUsingReflectionIsAssignableFrom_thenParentInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(MasterInterface.class.isAssignableFrom(childClass2.getClass()));
+    }
+    
+    @Test
+    public void whenUsingReflectionIsInstance_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(ChildInterface2.class.isInstance(childClass2));
+    }
+    
+    @Test
+    public void whenUsingReflectionIsInstance_thenParentInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(MasterInterface.class.isInstance(childClass2));
+    }
+    
+    @Test
+    public void whenUsingReflectionInstanceOf_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(childClass2 instanceof ChildInterface2);
+    }
+    
+    @Test
+    public void whenUsingReflectionInstanceOf_thenParentInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        
+        assertTrue(childClass2 instanceof MasterInterface);
+    }
+    
+    @Test
+    public void whenUsingCommons_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        List<Class<?>> interfaces = ClassUtils.getAllInterfaces(childClass2.getClass());
+        
+        assertTrue(interfaces.contains(ChildInterface2.class));
+    }
+    
+    @Test
+    public void whenUsingCommons_thenParentInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        List<Class<?>> interfaces = ClassUtils.getAllInterfaces(childClass2.getClass());
+        
+        assertTrue(interfaces.contains(MasterInterface.class));
+    }
+    
+    @Test
+    public void whenUsingReflections_thenDirectlyImplementedInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        Set<Class<?>> interfaces = reflections.get(ReflectionUtils.Interfaces.of(childClass2.getClass()));
+        
+        assertTrue(interfaces.contains(ChildInterface2.class));
+    }
+    
+    @Test
+    public void whenUsingReflections_thenParentInterfaceIsFound() {
+        
+        ChildClass2 childClass2 = new ChildClass2();        
+        Set<Class<?>> interfaces = reflections.get(ReflectionUtils.Interfaces.of(childClass2.getClass()));
+        
+        assertTrue(interfaces.contains(MasterInterface.class));
+    }
+    
+    static Set<Class<?>> getAllExtendedOrImplementedInterfacesRecursively(Class<?> clazz) { 
+        
+        Set<Class<?>> res = new HashSet<Class<?>>(); 
+        Class<?>[] interfaces = clazz.getInterfaces(); 
+        
+        if (interfaces.length > 0) { 
+            res.addAll(Arrays.asList(interfaces)); 
+            for (Class<?> interfaze : interfaces) { 
+                res.addAll(getAllExtendedOrImplementedInterfacesRecursively(interfaze)); 
+                } 
+            } 
+        
+        return res; 
+       }
+}

core-java-modules/core-java-lang-oop-types-2/README.md

@@ -8,3 +8,4 @@ This module contains articles about types in Java
 - [Check if an Enum Value Exists in Java](https://www.baeldung.com/java-search-enum-values)
 - [Generate a Random Value From an Enum](https://www.baeldung.com/java-enum-random-value)
 - [Filling a List With All Enum Values in Java](https://www.baeldung.com/java-enum-values-to-list)
+- [Comparing a String to an Enum Value in Java](https://www.baeldung.com/java-comparing-string-to-enum)

core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/keyword/InstanceOfUnitTest.java

@@ -1,55 +1,67 @@
 package com.baeldung.keyword;
 
-import org.junit.Assert;
 import org.junit.jupiter.api.Test;
 
-import com.baeldung.keyword.Circle;
-import com.baeldung.keyword.Ring;
-import com.baeldung.keyword.Round;
-import com.baeldung.keyword.Shape;
-import com.baeldung.keyword.Triangle;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import static org.junit.jupiter.api.Assertions.*;
 
 public class InstanceOfUnitTest {
 
     @Test
-    public void giveWhenInstanceIsCorrect_thenReturnTrue() {
+    void giveWhenInstanceIsCorrect_thenReturnTrue() {
         Ring ring = new Ring();
-        Assert.assertTrue("ring is instance of Round ", ring instanceof Round);
+        assertTrue(ring instanceof Round);
     }
 
     @Test
-    public void giveWhenObjectIsInstanceOfType_thenReturnTrue() {
+    void giveWhenObjectIsInstanceOfType_thenReturnTrue() {
         Circle circle = new Circle();
-        Assert.assertTrue("circle is instance of Circle ", circle instanceof Circle);
+        assertTrue(circle instanceof Circle);
     }
 
-  
+
     @Test
-    public void giveWhenInstanceIsOfSubtype_thenReturnTrue() {
+    void giveWhenInstanceIsOfSubtype_thenReturnTrue() {
         Circle circle = new Circle();
-        Assert.assertTrue("circle is instance of Round", circle instanceof Round);
+        assertTrue(circle instanceof Round);
     }
 
     @Test
-    public void giveWhenTypeIsInterface_thenReturnTrue() {
+    void giveWhenTypeIsInterface_thenReturnTrue() {
         Circle circle = new Circle();
-        Assert.assertTrue("circle is instance of Shape", circle instanceof Shape);
+        assertTrue(circle instanceof Shape);
     }
-    
+
     @Test
-    public void giveWhenTypeIsOfObjectType_thenReturnTrue() {
+    void giveWhenTypeIsOfObjectType_thenReturnTrue() {
         Thread thread = new Thread();
-        Assert.assertTrue("thread is instance of Object", thread instanceof Object);
+        assertTrue(thread instanceof Object);
     }
 
     @Test
-    public void giveWhenInstanceValueIsNull_thenReturnFalse() {
+    void giveWhenInstanceValueIsNull_thenReturnFalse() {
         Circle circle = null;
-        Assert.assertFalse("circle is instance of Round", circle instanceof Round);
+        assertFalse(circle instanceof Round);
     }
 
     @Test
-    public void giveWhenComparingClassInDiffHierarchy_thenCompilationError() {
-        // Assert.assertFalse("circle is instance of Triangle", circle instanceof Triangle);
+    void giveWhenComparingClassInDiffHierarchy_thenCompilationError() {
+        //assertFalse( circle instanceof Triangle);
     }
-}
+
+    @Test
+    void giveWhenStream_whenCastWithoutInstanceOfChk_thenGetException() {
+        Stream<Round> roundStream = Stream.of(new Ring(), new Ring(), new Circle());
+        assertThrows(ClassCastException.class, () -> roundStream.map(it -> (Ring) it).collect(Collectors.toList()));
+    }
+
+    @Test
+    void giveWhenStream_whenCastAfterInstanceOfChk_thenGetExpectedResult() {
+        Stream<Round> roundStream = Stream.of(new Ring(), new Ring(), new Circle());
+        List<Ring> ringList = roundStream.filter(it -> it instanceof Ring).map(it -> (Ring) it).collect(Collectors.toList());
+        assertEquals(2, ringList.size());
+    }
+}

core-java-modules/core-java-networking-2/pom.xml

@@ -25,15 +25,20 @@
             <version>${commons-lang3.version}</version>
         </dependency>
         <dependency>
-            <groupId>javax.mail</groupId>
-            <artifactId>mail</artifactId>
-            <version>${javax.mail.version}</version>
+            <groupId>org.eclipse.angus</groupId>
+            <artifactId>angus-mail</artifactId>
+            <version>${angus.mail.version}</version>
         </dependency>
         <dependency>
             <groupId>org.asynchttpclient</groupId>
             <artifactId>async-http-client</artifactId>
             <version>${async-http-client.version}</version>
         </dependency>
+        <dependency>
+            <groupId>jakarta.xml.bind</groupId>
+            <artifactId>jakarta.xml.bind-api</artifactId>
+            <version>${jakarta.bind.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.icegreen</groupId>
             <artifactId>greenmail</artifactId>
@@ -48,9 +53,10 @@
 
     <properties>
         <httpclient.version>4.5.9</httpclient.version>
-        <javax.mail.version>1.5.0-b01</javax.mail.version>
+        <angus.mail.version>2.0.1</angus.mail.version>
         <async-http-client.version>2.4.5</async-http-client.version>
-        <greenmail.version>1.5.8</greenmail.version>
+        <jakarta.bind.version>2.3.3</jakarta.bind.version>
+        <greenmail.version>2.0.0-alpha-3</greenmail.version>
     </properties>
 
 </project>

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/mail/EmailService.java

@@ -1,19 +1,20 @@
 package com.baeldung.mail;
 
-import javax.mail.Authenticator;
-import javax.mail.Message;
-import javax.mail.Multipart;
-import javax.mail.PasswordAuthentication;
-import javax.mail.Session;
-import javax.mail.Transport;
-import javax.mail.internet.InternetAddress;
-import javax.mail.internet.MimeBodyPart;
-import javax.mail.internet.MimeMessage;
-import javax.mail.internet.MimeMultipart;
 import java.io.File;
 import java.net.URI;
 import java.util.Properties;
 
+import jakarta.mail.Authenticator;
+import jakarta.mail.Message;
+import jakarta.mail.Multipart;
+import jakarta.mail.PasswordAuthentication;
+import jakarta.mail.Session;
+import jakarta.mail.Transport;
+import jakarta.mail.internet.InternetAddress;
+import jakarta.mail.internet.MimeBodyPart;
+import jakarta.mail.internet.MimeMessage;
+import jakarta.mail.internet.MimeMultipart;
+
 public class EmailService {
 
     private String username;

core-java-modules/core-java-networking-2/src/main/java/com/baeldung/mail/mailwithattachment/MailWithAttachmentService.java

@@ -1,21 +1,23 @@
 package com.baeldung.mail.mailwithattachment;
 
-import javax.mail.BodyPart;
-import javax.mail.Message;
-import javax.mail.MessagingException;
-import javax.mail.Multipart;
-import javax.mail.PasswordAuthentication;
-import javax.mail.Session;
-import javax.mail.Transport;
-import javax.mail.internet.InternetAddress;
-import javax.mail.internet.MimeBodyPart;
-import javax.mail.internet.MimeMessage;
-import javax.mail.internet.MimeMultipart;
 import java.io.File;
 import java.io.IOException;
 import java.net.URI;
 import java.util.Properties;
 
+import jakarta.mail.Authenticator;
+import jakarta.mail.BodyPart;
+import jakarta.mail.Message;
+import jakarta.mail.MessagingException;
+import jakarta.mail.Multipart;
+import jakarta.mail.PasswordAuthentication;
+import jakarta.mail.Session;
+import jakarta.mail.Transport;
+import jakarta.mail.internet.InternetAddress;
+import jakarta.mail.internet.MimeBodyPart;
+import jakarta.mail.internet.MimeMessage;
+import jakarta.mail.internet.MimeMultipart;
+
 public class MailWithAttachmentService {
 
     private final String username;
@@ -37,7 +39,7 @@ public class MailWithAttachmentService {
         props.put("mail.smtp.host", this.host);
         props.put("mail.smtp.port", this.port);
 
-        return Session.getInstance(props, new javax.mail.Authenticator() {
+        return Session.getInstance(props, new Authenticator() {
             protected PasswordAuthentication getPasswordAuthentication() {
                 return new PasswordAuthentication(username, password);
             }

core-java-modules/core-java-networking-2/src/test/java/com/baeldung/download/FileDownloadIntegrationTest.java

@@ -1,10 +1,7 @@
 package com.baeldung.download;
 
-import org.junit.After;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import static org.junit.Assert.assertTrue;
 
-import javax.xml.bind.DatatypeConverter;
 import java.io.IOException;
 import java.net.URISyntaxException;
 import java.nio.file.Files;
@@ -13,7 +10,11 @@ import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.concurrent.ExecutionException;
 
-import static org.junit.Assert.assertTrue;
+import javax.xml.bind.DatatypeConverter;
+
+import org.junit.After;
+import org.junit.BeforeClass;
+import org.junit.Test;
 
 public class FileDownloadIntegrationTest {
     

core-java-modules/core-java-networking-2/src/test/java/com/baeldung/mail/EmailServiceLiveTest.java

@@ -1,17 +1,19 @@
 package com.baeldung.mail;
 
-import com.icegreen.greenmail.junit.GreenMailRule;
-import com.icegreen.greenmail.util.ServerSetupTest;
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 
-import javax.mail.MessagingException;
-import javax.mail.internet.MimeMessage;
-import javax.mail.internet.MimeMultipart;
-import java.io.IOException;
+import com.icegreen.greenmail.junit.GreenMailRule;
+import com.icegreen.greenmail.util.ServerSetupTest;
 
-import static org.junit.Assert.assertEquals;
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+import jakarta.mail.internet.MimeMultipart;
 
 public class EmailServiceLiveTest {
 

core-java-modules/core-java-networking-2/src/test/java/com/baeldung/mail/mailwithattachment/MailWithAttachmentServiceLiveTest.java

@@ -1,20 +1,20 @@
 package com.baeldung.mail.mailwithattachment;
 
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+
 import com.icegreen.greenmail.configuration.GreenMailConfiguration;
 import com.icegreen.greenmail.junit.GreenMailRule;
 import com.icegreen.greenmail.util.GreenMailUtil;
 import com.icegreen.greenmail.util.ServerSetupTest;
-import org.junit.Before;
-import org.junit.Rule;
-import org.junit.Test;
 
-import javax.annotation.Resource;
-import javax.mail.MessagingException;
-import javax.mail.Session;
-import javax.mail.internet.MimeMessage;
-import javax.mail.internet.MimeMultipart;
-
-import static org.junit.Assert.assertEquals;
+import jakarta.mail.MessagingException;
+import jakarta.mail.Session;
+import jakarta.mail.internet.MimeMessage;
+import jakarta.mail.internet.MimeMultipart;
 
 public class MailWithAttachmentServiceLiveTest {
 
@@ -29,7 +29,6 @@ public class MailWithAttachmentServiceLiveTest {
           .withUser(USERNAME, PASSWORD)
       );
 
-    @Resource
     private MailWithAttachmentService emailService;
 
     @Before
@@ -73,5 +72,4 @@ public class MailWithAttachmentServiceLiveTest {
         return GreenMailUtil.getBody(((MimeMultipart) receivedMessage.getContent())
           .getBodyPart(2));
     }
-
 }

core-java-modules/core-java-networking-3/pom.xml

@@ -30,9 +30,9 @@
             <version>${tomcat.embeded.version}</version>
         </dependency>
         <dependency>
-            <groupId>com.sun.mail</groupId>
-            <artifactId>javax.mail</artifactId>
-            <version>${javax.mail.version}</version>
+            <groupId>org.eclipse.angus</groupId>
+            <artifactId>angus-mail</artifactId>
+            <version>${angus.mail.version}</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/com.github.seancfoley/ipaddress -->
         <dependency>
@@ -95,7 +95,7 @@
         <seancfoley.ipaddress.version>5.3.3</seancfoley.ipaddress.version>
         <jgonian.commons-ip-math.version>1.32</jgonian.commons-ip-math.version>
         <googlecode.ipv6.version>0.17</googlecode.ipv6.version>
-        <javax.mail.version>1.6.2</javax.mail.version>
+        <angus.mail.version>2.0.1</angus.mail.version>
         <apache.commons-validator.version>1.7</apache.commons-validator.version>
     </properties>
 

core-java-modules/core-java-networking-3/src/main/java/com/baeldung/downloadattachments/DownloadEmailAttachments.java

@@ -6,16 +6,16 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
 
-import javax.mail.Address;
-import javax.mail.Folder;
-import javax.mail.Message;
-import javax.mail.MessagingException;
-import javax.mail.Multipart;
-import javax.mail.NoSuchProviderException;
-import javax.mail.Part;
-import javax.mail.Session;
-import javax.mail.Store;
-import javax.mail.internet.MimeBodyPart;
+import jakarta.mail.Address;
+import jakarta.mail.Folder;
+import jakarta.mail.Message;
+import jakarta.mail.MessagingException;
+import jakarta.mail.Multipart;
+import jakarta.mail.NoSuchProviderException;
+import jakarta.mail.Part;
+import jakarta.mail.Session;
+import jakarta.mail.Store;
+import jakarta.mail.internet.MimeBodyPart;
 
 public class DownloadEmailAttachments {
     private String downloadDirectory;
@@ -24,7 +24,7 @@ public class DownloadEmailAttachments {
         this.downloadDirectory = dir;
     }
 
-    public void downloadEmailAttachments(String host, String port, String userName, String password) throws NoSuchProviderException, MessagingException, IOException {
+    public void downloadEmailAttachments(String host, String port, String userName, String password) throws MessagingException, IOException {
         Properties properties = setMailServerProperties(host, port);
         Store store = setSessionStoreProperties(userName, password, properties);
         Folder inbox = store.getFolder("INBOX");
@@ -67,7 +67,7 @@ public class DownloadEmailAttachments {
         return downloadedAttachments;
     }
 
-    public Store setSessionStoreProperties(String userName, String password, Properties properties) throws NoSuchProviderException, MessagingException {
+    public Store setSessionStoreProperties(String userName, String password, Properties properties) throws MessagingException {
         Session session = Session.getDefaultInstance(properties);
 
         Store store = session.getStore("pop3");

core-java-modules/core-java-networking-4/src/main/java/com/baeldung/urlvalidation/IPv4Validation.java

@@ -0,0 +1,27 @@
+package com.baeldung.urlvalidation;
+
+import com.google.common.net.InetAddresses;
+import org.apache.commons.validator.routines.InetAddressValidator;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class IPv4Validation {
+
+    public static boolean validateWithApacheCommons(String ip) {
+        InetAddressValidator validator = InetAddressValidator.getInstance();
+        return validator.isValid(ip);
+    }
+
+    public static boolean validateWithGuava(String ip) {
+        return InetAddresses.isInetAddress(ip);
+    }
+
+    public static boolean validateWithRegex(String ip) {
+        String regex = "^((25[0-5]|(2[0-4]|1\\d|[1-9]|)\\d)\\.?\\b){4}$";
+        Pattern pattern = Pattern.compile(regex);
+        Matcher matcher = pattern.matcher(ip);
+        return matcher.matches();
+    }
+
+}

core-java-modules/core-java-networking-4/src/test/java/com/baeldung/ipv4validation/IPv4ValidationUnitTest.java

@@ -0,0 +1,121 @@
+package com.baeldung.ipv4validation;
+
+import org.junit.Test;
+
+import static com.baeldung.urlvalidation.IPv4Validation.*;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class IPv4ValidationUnitTest {
+
+    @Test
+    public void givenValidIPv4_whenValidate_thenReturnsTrue() {
+        String ip = "192.168.0.1";
+        assertTrue(validateWithApacheCommons(ip));
+        assertTrue(validateWithGuava(ip));
+        assertTrue(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithThreeOctets_whenValidate_thenReturnsFalse() {
+        String ip = "192.168.0";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithLeadingZero_whenValidate_thenReturnsFalse() {
+        String ip = "192.168.0.01";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithInvalidCharacter_whenValidate_thenReturnsFalse() {
+        String ip = "a.168.0.01";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4HaveValueAbove255_whenValidate_thenReturnsFalse() {
+        String ip = "192.168.256.1";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenValidIPv4WithTwoDigitOctet_whenValidate_thenReturnsTrue() {
+        String ip = "192.168.42.1";
+        assertTrue(validateWithApacheCommons(ip));
+        assertTrue(validateWithGuava(ip));
+        assertTrue(validateWithRegex(ip));
+    }
+    @Test
+    public void givenValidIPv4WithNumberInRange200And249_whenValidate_thenReturnsTrue() {
+        String ip = "192.168.42.222";
+        assertTrue(validateWithApacheCommons(ip));
+        assertTrue(validateWithGuava(ip));
+        assertTrue(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithFourDigitOctet_whenValidate_thenReturnsFalse() {
+        String ip = "1921.168.42.222";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithFiveOctets_whenValidate_thenReturnsFalse() {
+        String ip = "192.168.42.222.10";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4WithTwoConsecutiveDots_whenValidate_thenReturnsFalse() {
+        String ip = "192.168..1";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenOnlyDots_whenValidate_thenReturnsFalse() {
+        String ip = "...";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenBlankString_whenValidate_thenReturnsFalse() {
+        String ip = "  ";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+    @Test
+    public void givenIPv4StartWithDot_whenValidate_thenReturnsFalse() {
+        String ip = ".192.168.0.1";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+    @Test
+    public void givenIPv4EndWithDot_whenValidate_thenReturnsFalse() {
+        String ip = "192.168.0.1.";
+        assertFalse(validateWithApacheCommons(ip));
+        assertFalse(validateWithGuava(ip));
+        assertFalse(validateWithRegex(ip));
+    }
+
+}

core-java-modules/core-java-numbers-5/README.md

@@ -7,3 +7,4 @@
 - [Make Division of Two Integers Result in a Float](https://www.baeldung.com/java-integer-division-float-result)
 - [Creating Random Numbers With No Duplicates in Java](https://www.baeldung.com/java-unique-random-numbers)
 - [Multiply a BigDecimal by an Integer in Java](https://www.baeldung.com/java-bigdecimal-multiply-integer)
+- [Check if an Integer Value is null or Zero in Java](https://www.baeldung.com/java-check-integer-null-or-zero)

core-java-modules/core-java-numbers-5/src/test/java/com/baeldung/absintdiff/AbsoluteDifferenceOfTwoIntUnitTest.java

@@ -0,0 +1,58 @@
+package com.baeldung.absintdiff;
+
+import static com.baeldung.absintdiff.IntDiffUtil.absDiff;
+import static com.baeldung.absintdiff.IntDiffUtil.absDiff2;
+import static com.baeldung.absintdiff.IntDiffUtil.absDiffAsLong;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+class IntDiffUtil {
+    static int absDiff(int num1, int num2) {
+        int result = Math.abs(num1 - num2);
+        System.out.println("Absolute diff: " + result);
+        return result;
+    }
+
+    static int absDiff2(int num1, int num2) {
+        return Math.abs(Math.subtractExact(num1, num2));
+    }
+
+    static long absDiffAsLong(int num1, int num2) {
+        return Math.abs((long) num1 - num2);
+    }
+}
+
+public class AbsoluteDifferenceOfTwoIntUnitTest {
+
+    @Test
+    void givenTwoIntegers_whenCallingAbsDiff_shouldGetExpectedResult() {
+        int diff1 = absDiff(100, -200);
+        assertEquals(300, diff1);
+
+        int diff2 = absDiff(100, 200);
+        assertEquals(100, diff2);
+
+        //integer overflow!  output: Absolute diff: 2147483449
+        //absDiff(Integer.MAX_VALUE, -200);
+    }
+
+    @Test
+    void givenTwoIntegers_whenCallingAbsDiff2_shouldThrowException() {
+        int diff1 = absDiff2(100, -200);
+        assertEquals(300, diff1);
+
+        int diff2 = absDiff2(100, 200);
+        assertEquals(100, diff2);
+
+        //overflow -> exception
+        assertThrows(ArithmeticException.class, () -> absDiff2(Integer.MAX_VALUE, -200));
+    }
+
+    @Test
+    void givenTwoIntegers_whenCallingAbsDiffAsLong_shouldThrowException() {
+        long diff = absDiffAsLong(Integer.MAX_VALUE, -200);
+        assertEquals(Integer.MAX_VALUE + 200L, diff);
+    }
+}

core-java-modules/core-java-streams-4/README.md

@@ -6,3 +6,4 @@
 - [Java 8 Streams: Multiple Filters vs. Complex Condition](https://www.baeldung.com/java-streams-multiple-filters-vs-condition)
 - [Finding Max Date in List Using Streams](https://www.baeldung.com/java-max-date-list-streams)
 - [Batch Processing of Stream Data in Java](https://www.baeldung.com/java-stream-batch-processing)
+- [Stream to Iterable in Java](https://www.baeldung.com/java-stream-to-iterable)

core-java-modules/core-java-streams-4/src/main/java/com/baeldung/streams/processing/CustomBatchIterator.java

@@ -14,20 +14,20 @@ public class CustomBatchIterator<T> implements Iterator<List<T>> {
     private List<T> currentBatch;
     private final Iterator<T> iterator;
 
-    public CustomBatchIterator(Iterator<T> sourceIterator, int batchSize) {
+    private CustomBatchIterator(Iterator<T> sourceIterator, int batchSize) {
         this.batchSize = batchSize;
         this.iterator = sourceIterator;
     }
 
     @Override
     public List<T> next() {
+        prepareNextBatch();
         return currentBatch;
     }
 
     @Override
     public boolean hasNext() {
-        prepareNextBatch();
-        return currentBatch != null && !currentBatch.isEmpty();
+        return iterator.hasNext();
     }
 
     public static <T> Stream<List<T>> batchStreamOf(Stream<T> stream, int batchSize) {

core-java-modules/core-java-streams-4/src/main/java/com/baeldung/streams/streamtoiterable/StreamToIterable.java

@@ -0,0 +1,42 @@
+package com.baeldung.streams.streamtoiterable;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import joptsimple.internal.Strings;
+
+public class StreamToIterable {
+    public String streamToIterableLambda(List<String> listOfStrings) {
+        Stream<String> stringStream = listOfStrings.stream();
+        StringBuilder sentence = new StringBuilder();
+        for (String eachString : (Iterable<String>) () -> stringStream.iterator()) {
+            doSomethingOnString(eachString, sentence);
+        }
+        return sentence.toString();
+    }
+
+    public String streamToIterableMethodReference(List<String> listOfStrings) {
+        Stream<String> stringStream = listOfStrings.stream();
+        StringBuilder sentence = new StringBuilder();
+        for (String eachString : (Iterable<String>) stringStream::iterator) {
+            doSomethingOnString(eachString, sentence);
+        }
+        return sentence.toString();
+    }
+
+    public String streamToList(List<String> listOfStrings) {
+        Stream<String> stringStream = listOfStrings.stream();
+        StringBuilder sentence = new StringBuilder();
+        for (String eachString : stringStream.collect(Collectors.toList())) {
+            doSomethingOnString(eachString, sentence);
+        }
+        return sentence.toString();
+    }
+
+    private void doSomethingOnString(String s, StringBuilder sentence) {
+        if (!Strings.isNullOrEmpty(s)) {
+            sentence.append(s);
+        }
+    }
+}

core-java-modules/core-java-streams-4/src/test/java/com/baeldung/streams/streamtoiterable/StreamToIterableUnitTest.java

@@ -0,0 +1,48 @@
+package com.baeldung.streams.streamtoiterable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class StreamToIterableUnitTest {
+
+    @Test
+    public void givenList_whenLambdaIsUsed_ThenStreamAsIterable(){
+        StreamToIterable streamToIterable = new StreamToIterable();
+        String actualString =  streamToIterable.streamToIterableLambda(getListOfStrings());
+        String expectedString = "Thisisasentencewithnospaces";
+        Assert.assertEquals(expectedString, actualString);
+    }
+
+    @Test
+    public void givenList_whenMethodReferenceIsUsed_ThenStreamAsIterable(){
+        StreamToIterable streamToIterable = new StreamToIterable();
+        String actualString =  streamToIterable.streamToIterableMethodReference(getListOfStrings());
+        String expectedString = "Thisisasentencewithnospaces";
+        Assert.assertEquals(expectedString, actualString);
+    }
+
+    @Test
+    public void givenList_whenCollectedToList_ThenStreamAsIterable(){
+        StreamToIterable streamToIterable = new StreamToIterable();
+        String actualString =  streamToIterable.streamToList(getListOfStrings());
+        String expectedString = "Thisisasentencewithnospaces";
+        Assert.assertEquals(expectedString, actualString);
+    }
+
+    private List<String> getListOfStrings(){
+        List<String> listOfStrings = new ArrayList<>();
+        listOfStrings.add("This");
+        listOfStrings.add("is");
+        listOfStrings.add("a");
+        listOfStrings.add(null);
+        listOfStrings.add("sentence");
+        listOfStrings.add("with");
+        listOfStrings.add("no");
+        listOfStrings.add(null);
+        listOfStrings.add("spaces");
+        return listOfStrings;
+    }
+}

core-java-modules/core-java/src/main/java/com/baeldung/anonymousclass/AnonymousClassExample.java

@@ -9,5 +9,6 @@ public class AnonymousClassExample{
                 System.out.println("Thread: "+Thread.currentThread().getName()+" started");
             }
         });
+        t1.start();
     }
 }

discord4j/pom.xml

@@ -53,19 +53,10 @@
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 
     <properties>
-        <java.version>1.8</java.version>
         <discord4j-core.version>3.1.1</discord4j-core.version>
     </properties>
 

docker-modules/docker-compose-2/README.md

@@ -1 +1,2 @@
 ## Relevant Articles:
+- [Communicating With Docker Containers on the Same Machine](https://www.baeldung.com/ops/docker-communicating-with-containers-on-same-machine)

feign/pom.xml

@@ -116,7 +116,6 @@
     </build>
 
     <properties>
-        <java.version>1.8</java.version>
         <feign.version>11.8</feign.version>
         <wsdl4j.version>1.6.3</wsdl4j.version>
     </properties>

gcp-firebase/src/main/resources/application.properties

@@ -1,2 +1,2 @@
-# Service account location. Can be a filesystem path or a classpath resource
-gcp.firebase.service-account=file:firebase-service-account.json
+# Service account location. Can be a filesystem path or a classpath resource. NB: Generate and use your own firebase-service-account.json file.
+gcp.firebase.service-account=classpath:firebase-service-account.json

gcp-firebase/src/main/resources/firebase-service-account.json

@@ -0,0 +1,12 @@
+{
+  "type": "service_account",
+  "project_id": "tutorials-2cdfb",
+  "private_key_id": "d9f6a684d6814f85ed2d0490585eb7bf590f983a",
+  "private_key": "-----BEGIN PRIVATE KEY-----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\naudInvdbnfAWi60+1Wi8u0Co\n-----END PRIVATE KEY-----\n",
+  "client_email": "firebase-adminsdk-2afzd@tutorials-2cdfb.iam.gserviceaccount.com",
+  "client_id": "111111112074248894669",
+  "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+  "token_uri": "https://oauth2.googleapis.com/token",
+  "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
+  "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-2afzd%40tutorials-2cdfb.iam.gserviceaccount.com"
+}

java-blockchain/pom.xml

@@ -24,22 +24,6 @@
                 <filtering>true</filtering>
             </resource>
         </resources>
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
-                <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-            </plugin>
-        </plugins>
     </build>
 
-    <properties>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-    </properties>
-
 </project>

java-websocket/pom.xml

@@ -28,6 +28,15 @@
         </dependency>
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
     <properties>
         <javax.websocket-api.version>1.1</javax.websocket-api.version>
         <gson.version>2.8.0</gson.version>

javaxval-2/pom.xml

@@ -60,9 +60,6 @@
     <properties>
         <hibernate-validator.version>6.2.3.Final</hibernate-validator.version>
         <hibernate-validator.ap.version>6.2.0.Final</hibernate-validator.ap.version>
-        <maven.compiler.version>3.6.1</maven.compiler.version>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <javax.el.version>3.0.0</javax.el.version>
         <org.springframework.version>5.3.21</org.springframework.version>
         <spring.boot.version>2.7.1</spring.boot.version>

javaxval/pom.xml

@@ -60,9 +60,6 @@
     <properties>
         <hibernate-validator.version>6.2.3.Final</hibernate-validator.version>
         <hibernate-validator.ap.version>6.2.0.Final</hibernate-validator.ap.version>
-        <maven.compiler.version>3.6.1</maven.compiler.version>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <javax.el.version>3.0.0</javax.el.version>
         <org.springframework.version>5.3.21</org.springframework.version>
         <spring.boot.version>2.7.1</spring.boot.version>

jersey/src/test/java/com/baeldung/jersey/server/ItemsUnitTest.java

@@ -9,10 +9,14 @@ import org.glassfish.grizzly.http.server.HttpServer;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
+import org.junit.jupiter.api.Disabled;
 
 import com.baeldung.jersey.server.http.EmbeddedHttpServer;
 
+@Disabled
+@Ignore
 public class ItemsUnitTest {
 
     private HttpServer server;

jgit/pom.xml

@@ -36,6 +36,7 @@
         </dependency>
     </dependencies>
 
+
     <properties>
         <org.eclipse.jgit.version>4.5.0.201609210915-r</org.eclipse.jgit.version>
     </properties>

jmeter/pom.xml

@@ -68,5 +68,91 @@
     <properties>
         <jmeter.version>2.6.0</jmeter.version>
     </properties>
+    
+    <profiles>
+        <profile>
+            <id>dashboard</id>
+            <activation>
+                <property>
+                    <name>env</name>
+                    <value>dash</value>
+                </property>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>org.springframework.boot</groupId>
+                    <artifactId>spring-boot-starter-thymeleaf</artifactId>
+                </dependency>
+                <dependency>
+                    <groupId>org.springframework.boot</groupId>
+                    <artifactId>spring-boot-starter-web</artifactId>
+                </dependency>
+            </dependencies>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.springframework.boot</groupId>
+                        <artifactId>spring-boot-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>launch-web-app</id>
+                                <goals>
+                                    <goal>start</goal>
+                                </goals>
+                                <configuration>
+                                    <mainClass>com.baeldung.dashboard.DashboardApplication</mainClass>
+                                </configuration>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>com.lazerycode.jmeter</groupId>
+                        <artifactId>jmeter-maven-plugin</artifactId>
+                        <version>3.7.0</version>
+                        <executions>
+                            <!-- Generate JMeter configuration -->
+                            <execution>
+                                <id>configuration</id>
+                                <goals>
+                                    <goal>configure</goal>
+                                </goals>
+                            </execution>
+                            <!-- Run JMeter tests -->
+                            <execution>
+                                <id>jmeter-tests</id>
+                                <goals>
+                                    <goal>jmeter</goal>
+                                    <goal>results</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <testFilesDirectory>${project.basedir}/src/main/resources/dashboard</testFilesDirectory>
+                            <resultsDirectory>${project.basedir}/src/main/resources/dashboard</resultsDirectory>
+                            <generateReports>true</generateReports>
+                            <ignoreResultFailures>true</ignoreResultFailures>
+                            <testResultsTimestamp>false</testResultsTimestamp>
+                        </configuration>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.springframework.boot</groupId>
+                        <artifactId>spring-boot-maven-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>stop-web-app</id>
+                                <goals>
+                                    <goal>stop</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+
+            <properties>
+                <jmeter.version>5.5</jmeter.version>
+            </properties>
+        </profile>
+    </profiles>
 
 </project>

jmeter/src/main/java/com/baeldung/dashboard/DashboardApplication.java

@@ -0,0 +1,15 @@
+package com.baeldung.dashboard;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
+import org.springframework.boot.autoconfigure.data.mongo.MongoRepositoriesAutoConfiguration;
+import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+
+@SpringBootApplication(exclude = { SecurityAutoConfiguration.class, MongoAutoConfiguration.class, MongoRepositoriesAutoConfiguration.class, MongoDataAutoConfiguration.class })
+public class DashboardApplication {
+    public static void main(String[] args) throws Exception {
+        SpringApplication.run(DashboardApplication.class, args);
+    }
+}

jmeter/src/main/java/com/baeldung/dashboard/controllers/Dashboard.java

@@ -0,0 +1,42 @@
+package com.baeldung.dashboard.controllers;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Random;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+import com.baeldung.dashboard.models.Quotes;
+
+@Controller
+public class Dashboard {
+    
+    @GetMapping("/greeting")
+    public String getGreeting(Model model) {
+        model.addAttribute("host", System.getProperty("os.name"));
+        return "greeting";
+    }
+    
+    @GetMapping("/quote")
+    public String getQuote(Model model) throws InterruptedException {
+        Random r = new Random();
+        int day = r.nextInt(7);
+        String quote = Quotes.list.get(day);
+        
+        int wait = r.nextInt(6);
+        Thread.currentThread().sleep(wait);
+        model.addAttribute("quote", quote);
+        
+        return "quote";
+    }
+    
+    @GetMapping("/time")
+    public String getTime(Model model) {
+        DateTimeFormatter fmt = DateTimeFormatter.ofPattern("hh:mm:ss a");
+        LocalDateTime now = LocalDateTime.now();
+        model.addAttribute("time", fmt.format(now));
+        return "time";
+    }
+}

jmeter/src/main/java/com/baeldung/dashboard/models/Quotes.java

@@ -0,0 +1,13 @@
+package com.baeldung.dashboard.models;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class Quotes {
+    public static final List<String> list = Arrays.asList("The greatest glory in living lies not in never falling, but in rising every time we fall. -Nelson Mandela\r\n", 
+      "The way to get started is to quit talking and begin doing. -Walt Disney\r\n",
+      "Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma – which is living with the results of other people's thinking. -Steve Jobs\r\n",
+      "If life were predictable it would cease to be life, and be without flavor. -Eleanor Roosevelt\r\n",
+      "If you look at what you have in life, you'll always have more. If you look at what you don't have in life, you'll never have enough. -Oprah Winfrey\r\n",
+      "If you set your goals ridiculously high and it's a failure, you will fail above everyone else's success. -James Cameron\r\n", "Life is what happens when you're busy making other plans. -John Lennon");
+}

jmeter/src/main/resources/dashboard/ReportsDashboard.csv

@@ -0,0 +1,16 @@
+timeStamp,elapsed,label,responseCode,responseMessage,threadName,dataType,success,failureMessage,bytes,sentBytes,grpThreads,allThreads,URL,Latency,IdleTime,Connect
+1674622105952,714,HTTP Request (/greeting),200,,Thread Group 1-4,text,true,,430,126,5,5,http://localhost:8080/greeting,705,0,7
+1674622105450,1216,HTTP Request (/greeting),200,,Thread Group 1-1,text,true,,430,126,5,5,http://localhost:8080/greeting,1207,0,54
+1674622105468,1198,HTTP Request (/greeting),200,,Thread Group 1-2,text,true,,430,126,5,5,http://localhost:8080/greeting,1189,0,36
+1674622106064,602,HTTP Request (/greeting),200,,Thread Group 1-5,text,true,,430,126,5,5,http://localhost:8080/greeting,593,0,2
+1674622105800,866,HTTP Request (/greeting),200,,Thread Group 1-3,text,true,,430,126,5,5,http://localhost:8080/greeting,857,0,1
+1674622106669,13,HTTP Request (/quote),200,,Thread Group 1-4,text,true,,515,123,5,5,http://localhost:8080/quote,12,0,0
+1674622106669,16,HTTP Request (/quote),200,,Thread Group 1-2,text,true,,548,123,5,5,http://localhost:8080/quote,16,0,0
+1674622106671,18,HTTP Request (/quote),200,,Thread Group 1-1,text,true,,629,123,5,5,http://localhost:8080/quote,18,0,0
+1674622106669,24,HTTP Request (/quote),200,,Thread Group 1-5,text,true,,602,123,5,5,http://localhost:8080/quote,24,0,0
+1674622106669,29,HTTP Request (/quote),200,,Thread Group 1-3,text,true,,515,123,5,5,http://localhost:8080/quote,29,0,0
+1674622106690,18,HTTP Request (/time),200,,Thread Group 1-1,text,true,,432,122,5,5,http://localhost:8080/time,18,0,0
+1674622106699,9,HTTP Request (/time),200,,Thread Group 1-3,text,true,,432,122,5,5,http://localhost:8080/time,9,0,0
+1674622106683,26,HTTP Request (/time),200,,Thread Group 1-4,text,true,,432,122,5,5,http://localhost:8080/time,25,0,0
+1674622106688,25,HTTP Request (/time),200,,Thread Group 1-2,text,true,,432,122,2,2,http://localhost:8080/time,25,0,0
+1674622106695,18,HTTP Request (/time),200,,Thread Group 1-5,text,true,,432,122,2,2,http://localhost:8080/time,17,0,0

jmeter/src/main/resources/dashboard/ReportsDashboard.jmx

@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.5">
+  <hashTree>
+    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="ReportsDashboard" enabled="true">
+      <stringProp name="TestPlan.comments"></stringProp>
+      <boolProp name="TestPlan.functional_mode">false</boolProp>
+      <boolProp name="TestPlan.tearDown_on_shutdown">true</boolProp>
+      <boolProp name="TestPlan.serialize_threadgroups">false</boolProp>
+      <elementProp name="TestPlan.user_defined_variables" elementType="Arguments" guiclass="ArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+        <collectionProp name="Arguments.arguments"/>
+      </elementProp>
+      <stringProp name="TestPlan.user_define_classpath"></stringProp>
+    </TestPlan>
+    <hashTree>
+      <ThreadGroup guiclass="ThreadGroupGui" testclass="ThreadGroup" testname="Thread Group" enabled="true">
+        <stringProp name="TestPlan.comments">Test Greetings Page</stringProp>
+        <stringProp name="ThreadGroup.on_sample_error">continue</stringProp>
+        <elementProp name="ThreadGroup.main_controller" elementType="LoopController" guiclass="LoopControlPanel" testclass="LoopController" testname="Loop Controller" enabled="true">
+          <boolProp name="LoopController.continue_forever">false</boolProp>
+          <stringProp name="LoopController.loops">1</stringProp>
+        </elementProp>
+        <stringProp name="ThreadGroup.num_threads">5</stringProp>
+        <stringProp name="ThreadGroup.ramp_time">1</stringProp>
+        <boolProp name="ThreadGroup.scheduler">false</boolProp>
+        <stringProp name="ThreadGroup.duration"></stringProp>
+        <stringProp name="ThreadGroup.delay"></stringProp>
+        <boolProp name="ThreadGroup.same_user_on_next_iteration">true</boolProp>
+      </ThreadGroup>
+      <hashTree>
+        <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="HTTP Request (/greeting)" enabled="true">
+          <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+            <collectionProp name="Arguments.arguments"/>
+          </elementProp>
+          <stringProp name="HTTPSampler.domain">localhost</stringProp>
+          <stringProp name="HTTPSampler.port">8080</stringProp>
+          <stringProp name="HTTPSampler.protocol"></stringProp>
+          <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+          <stringProp name="HTTPSampler.path">/greeting</stringProp>
+          <stringProp name="HTTPSampler.method">GET</stringProp>
+          <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+          <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+          <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+          <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+          <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+          <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+          <stringProp name="HTTPSampler.response_timeout"></stringProp>
+        </HTTPSamplerProxy>
+        <hashTree/>
+        <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="HTTP Request (/quote)" enabled="true">
+          <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+            <collectionProp name="Arguments.arguments"/>
+          </elementProp>
+          <stringProp name="HTTPSampler.domain">localhost</stringProp>
+          <stringProp name="HTTPSampler.port">8080</stringProp>
+          <stringProp name="HTTPSampler.protocol"></stringProp>
+          <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+          <stringProp name="HTTPSampler.path">/quote</stringProp>
+          <stringProp name="HTTPSampler.method">GET</stringProp>
+          <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+          <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+          <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+          <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+          <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+          <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+          <stringProp name="HTTPSampler.response_timeout"></stringProp>
+        </HTTPSamplerProxy>
+        <hashTree/>
+        <HTTPSamplerProxy guiclass="HttpTestSampleGui" testclass="HTTPSamplerProxy" testname="HTTP Request (/time)" enabled="true">
+          <elementProp name="HTTPsampler.Arguments" elementType="Arguments" guiclass="HTTPArgumentsPanel" testclass="Arguments" testname="User Defined Variables" enabled="true">
+            <collectionProp name="Arguments.arguments"/>
+          </elementProp>
+          <stringProp name="HTTPSampler.domain">localhost</stringProp>
+          <stringProp name="HTTPSampler.port">8080</stringProp>
+          <stringProp name="HTTPSampler.protocol"></stringProp>
+          <stringProp name="HTTPSampler.contentEncoding"></stringProp>
+          <stringProp name="HTTPSampler.path">/time</stringProp>
+          <stringProp name="HTTPSampler.method">GET</stringProp>
+          <boolProp name="HTTPSampler.follow_redirects">true</boolProp>
+          <boolProp name="HTTPSampler.auto_redirects">false</boolProp>
+          <boolProp name="HTTPSampler.use_keepalive">true</boolProp>
+          <boolProp name="HTTPSampler.DO_MULTIPART_POST">false</boolProp>
+          <stringProp name="HTTPSampler.embedded_url_re"></stringProp>
+          <stringProp name="HTTPSampler.connect_timeout"></stringProp>
+          <stringProp name="HTTPSampler.response_timeout"></stringProp>
+        </HTTPSamplerProxy>
+        <hashTree/>
+        <ResultCollector guiclass="ViewResultsFullVisualizer" testclass="ResultCollector" testname="View Results Tree" enabled="true">
+          <boolProp name="ResultCollector.error_logging">false</boolProp>
+          <objProp>
+            <name>saveConfig</name>
+            <value class="SampleSaveConfiguration">
+              <time>true</time>
+              <latency>true</latency>
+              <timestamp>true</timestamp>
+              <success>true</success>
+              <label>true</label>
+              <code>true</code>
+              <message>true</message>
+              <threadName>true</threadName>
+              <dataType>true</dataType>
+              <encoding>false</encoding>
+              <assertions>true</assertions>
+              <subresults>true</subresults>
+              <responseData>false</responseData>
+              <samplerData>false</samplerData>
+              <xml>false</xml>
+              <fieldNames>true</fieldNames>
+              <responseHeaders>false</responseHeaders>
+              <requestHeaders>false</requestHeaders>
+              <responseDataOnError>false</responseDataOnError>
+              <saveAssertionResultsFailureMessage>true</saveAssertionResultsFailureMessage>
+              <assertionsResultsToSave>0</assertionsResultsToSave>
+              <bytes>true</bytes>
+              <sentBytes>true</sentBytes>
+              <url>true</url>
+              <threadCounts>true</threadCounts>
+              <idleTime>true</idleTime>
+              <connectTime>true</connectTime>
+            </value>
+          </objProp>
+          <stringProp name="filename">dashapp</stringProp>
+        </ResultCollector>
+        <hashTree/>
+      </hashTree>
+    </hashTree>
+  </hashTree>
+</jmeterTestPlan>

jmeter/src/main/resources/static/index.html

@@ -0,0 +1,15 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+	<title>Jmeter Dashboard Test APP</title>
+	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+
+<body>
+	<p>Get your Quote <a href="/quote">here</a></p>
+	<p>Get your Time <a href="/time">here</a></p>
+	<p>Get your greeting <a href="/greeting">here</a></p>
+</body>
+
+</html>

jmeter/src/main/resources/templates/greeting.html

@@ -0,0 +1,10 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head> 
+    <title>Jmeter Dashboard Test APP</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+    <p th:text="'Hello from, ' + ${host} + '!'" />
+</body>
+</html>

jmeter/src/main/resources/templates/quote.html

@@ -0,0 +1,11 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head> 
+    <title>Jmeter Dashboard Test APP</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+    <h1 th:text="'Quote of the day:'" />
+    <p th:text="${quote}" />
+</body>
+</html>

jmeter/src/main/resources/templates/time.html

@@ -0,0 +1,10 @@
+<!DOCTYPE HTML>
+<html xmlns:th="http://www.thymeleaf.org">
+<head> 
+    <title>Jmeter Dashboard Test APP</title>
+    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+</head>
+<body>
+    <p th:text="'Current Time: ' + ${time}" />
+</body>
+</html>

kubernetes-modules/kubernetes-spring/pom.xml

@@ -3,11 +3,10 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.example</groupId>
-    <artifactId>demo</artifactId>
+    <artifactId>kubernetes-spring</artifactId>
     <version>0.0.1-SNAPSHOT</version>
-    <name>demo</name>
-    <description>Demo project for Spring Boot</description>
+    <name>kubernetes-spring</name>
+    <description>Intro to Kubernetes with Spring boot</description>
 
     <parent>
         <groupId>com.baeldung</groupId>

libraries-server-2/pom.xml

@@ -34,6 +34,10 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+            </plugin>
             <plugin>
                 <groupId>org.eclipse.jetty</groupId>
                 <artifactId>jetty-maven-plugin</artifactId>

logging-modules/logback/pom.xml

@@ -65,14 +65,14 @@
             </exclusions>
         </dependency>
         <dependency>
-            <groupId>com.sun.mail</groupId>
-            <artifactId>javax.mail</artifactId>
-    	    <version>${javax.mail.version}</version>
+            <groupId>org.eclipse.angus</groupId>
+            <artifactId>angus-mail</artifactId>
+            <version>${angus.mail.version}</version>
         </dependency>
         <dependency>
-            <groupId>javax.activation</groupId>
-            <artifactId>javax.activation-api</artifactId>
-            <version>${javax.activation.version}</version>
+            <groupId>org.eclipse.angus</groupId>
+            <artifactId>angus-activation</artifactId>
+            <version>${angus.activation.version}</version>
             <scope>runtime</scope>
         </dependency>
     </dependencies>
@@ -116,8 +116,8 @@
         <json.version>20180130</json.version>
         <logback.contrib.version>0.1.5</logback.contrib.version>
         <docx4j.version>3.3.5</docx4j.version>
-        <javax.mail.version>1.6.2</javax.mail.version>
-        <javax.activation.version>1.2.0</javax.activation.version>
+        <angus.mail.version>2.0.1</angus.mail.version>
+        <angus.activation.version>2.0.0</angus.activation.version>
         <logback.version>1.3.5</logback.version>
         <slf4j.version>2.0.4</slf4j.version>
     </properties>

mapstruct/pom.xml

@@ -49,10 +49,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
                     <annotationProcessorPaths>
                         <path>
                             <groupId>org.mapstruct</groupId>
@@ -78,8 +75,6 @@
     <properties>
         <org.mapstruct.version>1.5.3.Final</org.mapstruct.version>
         <springframework.version>4.3.4.RELEASE</springframework.version>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
         <lombok.mapstruct.binding.version>0.2.0</lombok.mapstruct.binding.version>
     </properties>
 

pdf/src/test/java/com/baeldung/pdfreadertest/ReadPdfFileUnitTest.java

@@ -0,0 +1,52 @@
+package com.baeldung.pdfreadertest;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.text.PDFTextStripper;
+import org.junit.jupiter.api.Test;
+
+import com.itextpdf.text.pdf.PdfReader;
+import com.itextpdf.text.pdf.parser.PdfTextExtractor;
+
+class ReadPdfFileUnitTest {
+
+    @Test
+    public void givenSamplePdf_whenUsingApachePdfBox_thenCompareOutput() throws IOException {
+        String expectedText = "Hello World!\n";
+
+        File file = new File("sample.pdf");
+        PDDocument document = PDDocument.load(file);
+
+        PDFTextStripper stripper = new PDFTextStripper();
+
+        String text = stripper.getText(document);
+
+        document.close();
+
+        assertEquals(expectedText, text);
+
+    }
+
+    @Test
+    public void givenSamplePdf_whenUsingiTextPdf_thenCompareOutput() throws IOException {
+        String expectedText = "Hello World!";
+
+        PdfReader reader = new PdfReader("sample.pdf");
+        int pages = reader.getNumberOfPages();
+        StringBuilder text = new StringBuilder();
+
+        for (int i = 1; i <= pages; i++) {
+
+            text.append(PdfTextExtractor.getTextFromPage(reader, i));
+
+        }
+        reader.close();
+        assertEquals(expectedText, text.toString());
+
+    }
+
+}

persistence-modules/spring-data-redis/pom.xml

@@ -42,11 +42,6 @@
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>org.junit.platform</groupId>
-            <artifactId>junit-platform-runner</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>cglib</groupId>
             <artifactId>cglib-nodep</artifactId>

persistence-modules/spring-data-redis/src/test/java/com/baeldung/SpringContextLiveTest.java

@@ -1,8 +1,8 @@
 package com.baeldung;
 
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.annotation.DirtiesContext.ClassMode;
@@ -13,17 +13,17 @@ import redis.embedded.RedisServerBuilder;
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = SpringRedisApplication.class)
 @DirtiesContext(classMode = ClassMode.BEFORE_CLASS)
-public class SpringContextTest {
+public class SpringContextLiveTest {
     
     private static redis.embedded.RedisServer redisServer;
     
-    @BeforeClass
+    @BeforeAll
     public static void startRedisServer() {
         redisServer = new RedisServerBuilder().port(6379).setting("maxmemory 256M").build();
         redisServer.start();
     }
 
-    @AfterClass
+    @AfterAll
     public static void stopRedisServer() {
         redisServer.stop();
     }

pom.xml

@@ -330,161 +330,104 @@
                 <module>parent-spring-5</module>
                 <module>parent-java</module>
 
-                <module>akka-modules</module>
-
                 <module>algorithms-modules</module>
-                <module>annotations</module>
-                <module>antlr</module>
 
                 <module>apache-cxf-modules</module>
-                <module>apache-kafka</module>
-                <module>apache-kafka-2</module>
                 <module>apache-libraries</module>
-                <module>apache-olingo</module>
                 <module>apache-poi</module>
-                <module>apache-poi-2</module>
-                <module>apache-rocketmq</module>
-                <module>apache-thrift</module>
-                <module>apache-tika</module>
                 <module>apache-velocity</module>
-
+                <module>di-modules</module>
                 <module>asciidoctor</module>
-                <module>asm</module>
-
-                <module>atomix</module>
 
                 <module>aws-modules</module>
 
-                <module>axon</module>
-
                 <module>azure</module>
-
-                <module>bazel</module>
                 <module>checker-plugin</module>
                 <!-- <module>clojure</module> --> <!-- Not a maven project -->
-                <module>code-generation</module>
 
                 <module>core-groovy-modules</module>
-
                 <module>core-java-modules</module>
-
                 <module>couchbase</module>
                 <module>custom-pmd</module>
-
                 <module>data-structures</module>
-                <module>ddd</module>
                 <module>deeplearning4j</module>
-                <module>di-modules</module>
-                <module>discord4j</module>
-                <module>disruptor</module>
-                <module>dozer</module>
                 <module>drools</module>
-                <module>dubbo</module>
+
 
                 <!-- <module>ethereum</module> --> <!-- JAVA-6001 -->
 
-                <module>feign</module>
-                <!-- <module>gcp-firebase</module> --> <!-- JAVA-16938 -->
+
                 <module>geotools</module>
-                <module>google-cloud</module>
+
                 <!-- <module>gradle-modules</module> --> <!-- Not a maven project -->
                 <module>gradle-modules/gradle/maven-to-gradle</module>
                 <!-- <module>grails</module> --> <!-- Not a maven project -->
-                <module>graphql-modules</module>
-                <module>grpc</module>
+
                 <module>guava-modules</module>
                 <!-- <module>guest</module> --> <!-- not to be built as its for guest articles  -->
 
-                <module>hazelcast</module>
                 <module>apache-httpclient</module>
                 <module>httpclient-simple</module>
-                <module>hystrix</module>
+
 
                 <module>jackson-modules</module>
-                <module>jackson-simple</module>
-                <module>java-blockchain</module>
+
                 <module>javafx</module>
                 <module>java-jdi</module>
-                <module>java-rmi</module>
-                <module>java-spi</module>
                 <module>java-websocket</module>
-                <module>javax-sound</module>
-                <module>javaxval</module>
-                <module>javaxval-2</module>
-                <module>javax-validation-advanced</module>
+
                 <module>jaxb</module>
                 <module>jersey</module>
-                <module>jgit</module>
                 <module>jhipster-5</module>
-                <module>jib</module>
                 <module>jmeter</module>
                 <module>jmh</module>
-                <module>java-native</module>
+
                 <module>jsf</module>
                 <module>json-modules</module>
-                <module>jsoup</module>
+
                 <module>kubernetes-modules</module>
-                <module>ksqldb</module>
+
                 <!-- <module>lagom</module> --> <!-- Not a maven project -->
                 <module>language-interop</module>
                 <module>libraries-2</module>
                 <module>libraries-3</module>
-                <module>libraries-7</module>
-
-                <module>libraries-apache-commons</module>
-                <module>libraries-apache-commons-collections</module>
-                <module>libraries-apache-commons-io</module>
                 <module>libraries-data</module>
-                <module>libraries-data-2</module>
+
+
                 <module>libraries-data-db</module>
-                <module>libraries-data-io</module>
-                <module>libraries-files</module>
-                <module>libraries-http</module>
-                <module>libraries-http-2</module>
-                <module>libraries-io</module>
-                <module>libraries-primitive</module>
-                <module>libraries-rpc</module>
                 <module>libraries-security</module>
-                <module>libraries-server</module>
                 <module>libraries-server-2</module>
                 <module>libraries-testing</module>
                 <module>logging-modules</module>
                 <module>lombok-modules</module>
-                <module>lucene</module>
-                <module>mapstruct</module>
 
                 <module>maven-modules</module>
 
-                <module>mesos-marathon</module>
                 <module>messaging-modules</module>
-                <module>metrics</module>
+
                 <module>microservices-modules</module>
                 <module>muleesb</module>
-                <module>mustache</module>
-                <module>mybatis</module>
+
 
                 <module>netflix-modules</module>
 
-                <module>orika</module>
                 <module>osgi</module>
+                <module>orika</module>
 
                 <module>patterns-modules</module>
-                <module>pdf</module>
-                <module>pdf-2</module>
+
                 <module>performance-tests</module>
                 <module>persistence-modules</module>
-                <module>protobuffer</module>
+
 
                 <module>quarkus-modules</module>
 
-                <module>reactor-core</module>
-                <module>rsocket</module>
                 <module>rule-engines-modules</module>
                 <module>rxjava-modules</module>
-                <module>atomikos</module>
+
                 <module>reactive-systems</module>
                 <module>security-modules</module>
-                <module>slack</module>
+
                 <module>vavr-modules</module>
                 <module>web-modules</module>
             </modules>
@@ -533,93 +476,51 @@
 
                 <module>saas-modules</module>
                 <module>server-modules</module>
-
                 <module>spf4j</module>
-
                 <module>spring-4</module>
-
-                <module>spring-5</module>
                 <module>spring-reactive-modules</module>
-                <module>spring-5-webflux</module>
-                <module>spring-5-webflux-2</module>
-
-                <module>spring-activiti</module>
                 <module>spring-aop</module>
                 <module>spring-aop-2</module>
-
                 <module>spring-batch</module>
-                <module>spring-batch-2</module>
                 <module>spring-bom</module>
                 <module>spring-boot-modules</module>
                 <module>spring-boot-rest</module>
-
                 <module>spring-caching</module>
-                <module>spring-caching-2</module>
-
                 <module>spring-cloud-modules</module>
                 <!-- <module>spring-cloud-cli</module> --> <!-- Not a maven project -->
-
                 <module>spring-core</module>
-                <module>spring-core-2</module>
-                <module>spring-core-3</module>
                 <module>spring-core-4</module>
-                <module>spring-core-5</module>
-                <module>spring-credhub</module>
-                <module>spring-cucumber</module>
-
                 <module>spring-di</module>
                 <module>spring-di-2</module>
-                <module>spring-di-3</module>
                 <module>spring-drools</module>
-
                 <module>spring-ejb-modules</module>
+
                 <module>spring-exceptions</module>
-
                 <module>spring-integration</module>
-
                 <module>spring-jenkins-pipeline</module>
                 <module>spring-jersey</module>
                 <module>spring-jinq</module>
-
-                <module>spring-kafka</module>
                 <module>spring-katharsis</module>
-
                 <module>spring-mobile</module>
-                <module>spring-native</module>
-                <module>spring-protobuf</module>
-                <module>spring-quartz</module>
-
                 <module>spring-remoting-modules</module>
+
                 <!-- <module>spring-roo</module> --> <!-- JAVA-17327 -->
 
-                <module>spring-scheduling</module>
                 <module>spring-security-modules</module>
                 <module>spring-shell</module>
                 <module>spring-soap</module>
                 <module>spring-spel</module>
-                <module>spring-state-machine</module>
                 <module>spring-static-resources</module>
                 <module>spring-swagger-codegen</module>
-
-                <module>spring-threads</module>
-
                 <module>spring-vault</module>
-
                 <module>spring-web-modules</module>
                 <module>spring-websockets</module>
-
                 <module>static-analysis</module>
-
-                <module>tensorflow-java</module>
                 <module>testing-modules</module>
-
                 <module>vertx-modules</module>
                 <module>video-tutorials</module>
-
-                <module>webrtc</module>
                 <module>xml</module>
                 <module>xml-2</module>
-                <module>xstream</module>
             </modules>
 
         </profile>
@@ -674,7 +575,6 @@
                 <module>libraries-4</module>
                 <module>libraries-5</module>
                 <module>libraries-6</module>
-
                 <module>spring-boot-modules/spring-boot-react</module>
                 <module>spring-ejb-modules/ejb-beans</module>
 
@@ -715,161 +615,104 @@
                 <module>parent-spring-5</module>
                 <module>parent-java</module>
 
-                <module>akka-modules</module>
-
                 <module>algorithms-modules</module>
-                <module>annotations</module>
-                <module>antlr</module>
 
                 <module>apache-cxf-modules</module>
-                <module>apache-kafka</module>
-                <module>apache-kafka-2</module>
                 <module>apache-libraries</module>
-                <module>apache-olingo</module>
                 <module>apache-poi</module>
-                <module>apache-poi-2</module>
-                <module>apache-rocketmq</module>
-                <module>apache-thrift</module>
-                <module>apache-tika</module>
                 <module>apache-velocity</module>
-
+                <module>di-modules</module>
                 <module>asciidoctor</module>
-                <module>asm</module>
-
-                <module>atomix</module>
 
                 <module>aws-modules</module>
 
-                <module>axon</module>
-
                 <module>azure</module>
-
-                <module>bazel</module>
                 <module>checker-plugin</module>
                 <!-- <module>clojure</module> --> <!-- Not a maven project -->
-                <module>code-generation</module>
 
                 <module>core-groovy-modules</module>
-
                 <module>core-java-modules</module>
-
                 <module>couchbase</module>
                 <module>custom-pmd</module>
-
                 <module>data-structures</module>
-                <module>ddd</module>
                 <module>deeplearning4j</module>
-                <module>di-modules</module>
-                <module>discord4j</module>
-                <module>disruptor</module>
-                <module>dozer</module>
                 <module>drools</module>
-                <module>dubbo</module>
+
 
                 <!-- <module>ethereum</module> --> <!-- JAVA-6001 -->
 
-                <module>feign</module>
-                <!-- <module>gcp-firebase</module> --> <!-- JAVA-16938 -->
+
                 <module>geotools</module>
-                <module>google-cloud</module>
+
                 <!-- <module>gradle-modules</module> --> <!-- Not a maven project -->
                 <module>gradle-modules/gradle/maven-to-gradle</module>
                 <!-- <module>grails</module> --> <!-- Not a maven project -->
-                <module>graphql-modules</module>
-                <module>grpc</module>
+
                 <module>guava-modules</module>
                 <!-- <module>guest</module> --> <!-- not to be built as its for guest articles  -->
 
-                <module>hazelcast</module>
                 <module>apache-httpclient</module>
                 <module>httpclient-simple</module>
-                <module>hystrix</module>
+
 
                 <module>jackson-modules</module>
-                <module>jackson-simple</module>
-                <module>java-blockchain</module>
+
                 <module>javafx</module>
                 <module>java-jdi</module>
-                <module>java-rmi</module>
-                <module>java-spi</module>
                 <module>java-websocket</module>
-                <module>javax-sound</module>
-                <module>javaxval</module>
-                <module>javaxval-2</module>
-                <module>javax-validation-advanced</module>
+
                 <module>jaxb</module>
                 <module>jersey</module>
-                <module>jgit</module>
                 <module>jhipster-5</module>
-                <module>jib</module>
                 <module>jmeter</module>
                 <module>jmh</module>
-                <module>java-native</module>
+
                 <module>jsf</module>
                 <module>json-modules</module>
-                <module>jsoup</module>
+
                 <module>kubernetes-modules</module>
-                <module>ksqldb</module>
+
                 <!-- <module>lagom</module> --> <!-- Not a maven project -->
                 <module>language-interop</module>
                 <module>libraries-2</module>
                 <module>libraries-3</module>
-                <module>libraries-7</module>
-
-                <module>libraries-apache-commons</module>
-                <module>libraries-apache-commons-collections</module>
-                <module>libraries-apache-commons-io</module>
                 <module>libraries-data</module>
-                <module>libraries-data-2</module>
+
+
                 <module>libraries-data-db</module>
-                <module>libraries-data-io</module>
-                <module>libraries-files</module>
-                <module>libraries-http</module>
-                <module>libraries-http-2</module>
-                <module>libraries-io</module>
-                <module>libraries-primitive</module>
-                <module>libraries-rpc</module>
                 <module>libraries-security</module>
-                <module>libraries-server</module>
                 <module>libraries-server-2</module>
                 <module>libraries-testing</module>
                 <module>logging-modules</module>
                 <module>lombok-modules</module>
-                <module>lucene</module>
-                <module>mapstruct</module>
 
                 <module>maven-modules</module>
 
-                <module>mesos-marathon</module>
                 <module>messaging-modules</module>
-                <module>metrics</module>
+
                 <module>microservices-modules</module>
                 <module>muleesb</module>
-                <module>mustache</module>
-                <module>mybatis</module>
+
 
                 <module>netflix-modules</module>
 
-                <module>orika</module>
                 <module>osgi</module>
+                <module>orika</module>
 
                 <module>patterns-modules</module>
-                <module>pdf</module>
-                <module>pdf-2</module>
+
                 <module>performance-tests</module>
                 <module>persistence-modules</module>
-                <module>protobuffer</module>
+
 
                 <module>quarkus-modules</module>
 
-                <module>reactor-core</module>
-                <module>rsocket</module>
                 <module>rule-engines-modules</module>
                 <module>rxjava-modules</module>
-                <module>atomikos</module>
+
                 <module>reactive-systems</module>
                 <module>security-modules</module>
-                <module>slack</module>
+
                 <module>vavr-modules</module>
                 <module>web-modules</module>
             </modules>
@@ -910,94 +753,50 @@
 
                 <module>saas-modules</module>
                 <module>server-modules</module>
-
                 <module>spf4j</module>
-
                 <module>spring-4</module>
-
-                <module>spring-5</module>
                 <module>spring-reactive-modules</module>
-                <module>spring-5-webflux</module>
-                <module>spring-5-webflux-2</module>
-
-
-                <module>spring-activiti</module>
                 <module>spring-aop</module>
                 <module>spring-aop-2</module>
-
                 <module>spring-batch</module>
-                <module>spring-batch-2</module>
                 <module>spring-bom</module>
                 <module>spring-boot-modules</module>
                 <module>spring-boot-rest</module>
-
                 <module>spring-caching</module>
-                <module>spring-caching-2</module>
-
                 <module>spring-cloud-modules</module>
                 <!-- <module>spring-cloud-cli</module> --> <!-- Not a maven project -->
-
                 <module>spring-core</module>
-                <module>spring-core-2</module>
-                <module>spring-core-3</module>
                 <module>spring-core-4</module>
-                <module>spring-core-5</module>
-                <module>spring-credhub</module>
-                <module>spring-cucumber</module>
-
                 <module>spring-di</module>
                 <module>spring-di-2</module>
-                <module>spring-di-3</module>
                 <module>spring-drools</module>
-
                 <module>spring-ejb-modules</module>
                 <module>spring-exceptions</module>
-
                 <module>spring-integration</module>
-
                 <module>spring-jenkins-pipeline</module>
                 <module>spring-jersey</module>
                 <module>spring-jinq</module>
-
-                <module>spring-kafka</module>
                 <module>spring-katharsis</module>
-
                 <module>spring-mobile</module>
-                <module>spring-native</module>
-                <module>spring-protobuf</module>
-                <module>spring-quartz</module>
-
                 <module>spring-remoting-modules</module>
+
                 <!-- <module>spring-roo</module> --> <!-- JAVA-17327 -->
 
-                <module>spring-scheduling</module>
                 <module>spring-security-modules</module>
                 <module>spring-shell</module>
                 <module>spring-soap</module>
                 <module>spring-spel</module>
-                <module>spring-state-machine</module>
                 <module>spring-static-resources</module>
                 <module>spring-swagger-codegen</module>
-
-                <module>spring-threads</module>
-
                 <module>spring-vault</module>
-
                 <module>spring-web-modules</module>
                 <module>spring-websockets</module>
-
                 <module>static-analysis</module>
-
-                <module>tensorflow-java</module>
                 <module>testing-modules</module>
-
                 <module>vertx-modules</module>
                 <module>video-tutorials</module>
-
-                <module>webrtc</module>
                 <module>xml</module>
                 <module>xml-2</module>
-                <module>xstream</module>
             </modules>
 
         </profile>
@@ -1044,12 +843,10 @@
                 <module>libraries-4</module>
                 <module>libraries-5</module>
                 <module>libraries-6</module>
-
                 <module>spring-boot-modules/spring-boot-react</module>
                 <module>spring-ejb-modules/ejb-beans</module>
-
                 <module>vaadin</module>
-                <module>vavr-modules</module>
+               <module>vavr-modules</module>
             </modules>
 
         </profile>
@@ -1119,64 +916,173 @@
                 <module>core-java-modules/core-java-9-improvements</module>
                 <module>core-java-modules/core-java-9-jigsaw</module>
                 <!-- <module>core-java-modules/core-java-9-new-features</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <module>core-java-modules/core-java-9-streams</module>
-                 <module>core-java-modules/core-java-10</module>
-                 <module>core-java-modules/core-java-11</module>
-                 <module>core-java-modules/core-java-11-2</module>
-                 <module>core-java-modules/core-java-11-3</module>
-                 <!-- <module>core-java-modules/core-java-12</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-13</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-14</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-15</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-16</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-17</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <!-- <module>core-java-modules/core-java-19</module> --> <!-- uses preview features, to be decided how to handle -->
-                 <module>core-java-modules/core-java-collections-set</module>
-                 <module>core-java-modules/core-java-collections-list-4</module>
-                 <module>core-java-modules/core-java-collections-array-list</module>
-                 <module>core-java-modules/core-java-collections-maps-4</module>
-                 <module>core-java-modules/core-java-collections-maps-5</module>
-                 <module>core-java-modules/core-java-concurrency-simple</module>
-                 <module>core-java-modules/core-java-date-operations-1</module>
-                 <module>core-java-modules/core-java-datetime-conversion</module>
-                 <module>core-java-modules/core-java-datetime-string</module>
-                 <module>core-java-modules/core-java-io-conversions-2</module>
-                 <module>core-java-modules/core-java-jpms</module>
-                 <module>core-java-modules/core-java-os</module>
-                 <module>core-java-modules/core-java-streams-4</module>
-                 <module>core-java-modules/core-java-string-algorithms-3</module>
-                 <module>core-java-modules/core-java-string-operations-3</module>
-                 <module>core-java-modules/core-java-string-operations-4</module>
-                 <module>core-java-modules/core-java-string-operations-5</module>
-                 <module>core-java-modules/core-java-time-measurements</module>
-                 <module>core-java-modules/core-java-networking-3</module>
-                 <module>core-java-modules/core-java-strings</module>
-                 <module>core-java-modules/core-java-httpclient</module>
-                 <module>spring-core-6</module>
-                 <module>ddd-contexts</module>
-                 <module>docker-modules</module>
-                 <module>apache-httpclient-2</module>
-                 <module>kubernetes-modules/kubernetes-spring</module>
-                 <module>libraries-concurrency</module>
-                 <module>maven-modules/compiler-plugin-java-9</module>
-                 <module>maven-modules/maven-generate-war</module>
-                 <module>maven-modules/multimodulemavenproject</module>
-                 <module>optaplanner</module>
-                 <module>persistence-modules/sirix</module>
-                 <module>persistence-modules/spring-data-cassandra-2</module>
-                 <module>quarkus-modules/quarkus-vs-springboot</module>
-                 <module>quarkus-modules/quarkus-jandex</module>
-                 <module>spring-boot-modules/spring-boot-cassandre</module>
-                 <module>spring-boot-modules/spring-boot-camel</module>
-                 <module>spring-boot-modules/spring-boot-3</module>
-                 <module>spring-boot-modules/spring-boot-3-native</module>
+                <module>core-java-modules/core-java-9-streams</module>
+                <module>core-java-modules/core-java-10</module>
+                <module>core-java-modules/core-java-11</module>
+                <module>core-java-modules/core-java-11-2</module>
+                <module>core-java-modules/core-java-11-3</module>
+                <!-- <module>core-java-modules/core-java-12</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-13</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-14</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-15</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-16</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-17</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-19</module> --> <!-- uses preview features, to be decided how to handle -->
+                <module>core-java-modules/core-java-collections-set</module>
+                <module>core-java-modules/core-java-collections-list-4</module>
+                <module>core-java-modules/core-java-collections-array-list</module>
+                <module>core-java-modules/core-java-collections-maps-4</module>
+                <module>core-java-modules/core-java-collections-maps-5</module>
+                <module>core-java-modules/core-java-concurrency-simple</module>
+                <module>core-java-modules/core-java-date-operations-1</module>
+                <module>core-java-modules/core-java-datetime-conversion</module>
+                <module>core-java-modules/core-java-datetime-string</module>
+                <module>core-java-modules/core-java-io-conversions-2</module>
+                <module>core-java-modules/core-java-jpms</module>
+                <module>core-java-modules/core-java-os</module>
+                <module>core-java-modules/core-java-streams-4</module>
+                <module>core-java-modules/core-java-string-algorithms-3</module>
+                <module>core-java-modules/core-java-string-operations-3</module>
+                <module>core-java-modules/core-java-string-operations-4</module>
+                <module>core-java-modules/core-java-string-operations-5</module>
+                <module>core-java-modules/core-java-time-measurements</module>
+                <module>core-java-modules/core-java-networking-3</module>
+                <module>core-java-modules/core-java-strings</module>
+                <module>core-java-modules/core-java-httpclient</module>
+                <module>spring-core-6</module>
+                <module>ddd-contexts</module>
+                <module>docker-modules</module>
+                <module>apache-httpclient-2</module>
+                <module>kubernetes-modules/kubernetes-spring</module>
+                <module>libraries-concurrency</module>
+                <module>maven-modules/compiler-plugin-java-9</module>
+                <module>maven-modules/maven-generate-war</module>
+                <module>maven-modules/multimodulemavenproject</module>
+                <module>optaplanner</module>
+                <module>persistence-modules/sirix</module>
+                <module>persistence-modules/spring-data-cassandra-2</module>
+                <module>quarkus-modules/quarkus-vs-springboot</module>
+                <module>quarkus-modules/quarkus-jandex</module>
+                <module>spring-boot-modules/spring-boot-cassandre</module>
+                <module>spring-boot-modules/spring-boot-camel</module>
+                <module>spring-boot-modules/spring-boot-3</module>
+                <module>spring-boot-modules/spring-boot-3-native</module>
                 <module>spring-boot-modules/spring-boot-3-observation</module>
-                 <module>spring-swagger-codegen/custom-validations-opeanpi-codegen</module>
-                 <module>testing-modules/testing-assertions</module>
-                 <module>persistence-modules/fauna</module>
-                 <module>lightrun</module>
-                 <module>tablesaw</module>
+                <module>spring-swagger-codegen/custom-validations-opeanpi-codegen</module>
+                <module>testing-modules/testing-assertions</module>
+                <module>persistence-modules/fauna</module>
+                <module>lightrun</module>
+                <module>tablesaw</module>
+
+                <!-- Modules from default-first -->
+
+                <module>akka-modules</module>
+                <module>annotations</module>
+                <module>apache-httpclient</module>
+                <module>antlr</module>
+                <module>apache-kafka</module>
+                <module>apache-kafka-2</module>
+                <module>apache-olingo</module>
+
+                <module>apache-poi-2</module>
+                <module>apache-rocketmq</module>
+                <module>apache-thrift</module>
+                <module>apache-tika</module>
+
+                <module>asm</module>
+                <module>atomikos</module>
+                <module>atomix</module>
+                <module>axon</module>
+
+                <module>bazel</module>
+                <module>code-generation</module>
+                <module>ddd</module>
+                <module>discord4j</module>
+                <module>disruptor</module>
+                <module>dozer</module>
+                <module>dubbo</module>
+                <module>feign</module>
+                <module>google-cloud</module>
+                <module>graphql-modules</module>
+                <module>grpc</module>
+                <module>hazelcast</module>
+                <module>hystrix</module>
+                <module>jackson-simple</module>
+                <module>java-blockchain</module>
+
+                <module>java-rmi</module>
+                <module>java-spi</module>
+                <module>javax-sound</module>
+                <module>javaxval</module>
+                <module>javaxval-2</module>
+                <module>javax-validation-advanced</module>
+                <module>jgit</module>
+                <module>jib</module>
+
+                <module>java-native</module>
+                <module>jsoup</module>
+                <module>ksqldb</module>
+                <module>libraries-7</module>
+                <module>libraries-apache-commons</module>
+                <module>libraries-apache-commons-collections</module>
+                <module>libraries-apache-commons-io</module>
+                <module>libraries-data-2</module>
+                <module>libraries-data-io</module>
+                <module>libraries-files</module>
+                <module>libraries-http</module>
+                <module>libraries-http-2</module>
+                <module>libraries-io</module>
+                <module>libraries-primitive</module>
+                <module>libraries-rpc</module>
+                <module>libraries-server</module>
+
+                <module>lucene</module>
+                <module>mapstruct</module>
+                <module>mesos-marathon</module>
+                <module>metrics</module>
+                <module>mustache</module>
+                <module>mybatis</module>
+                <module>pdf</module>
+                <module>pdf-2</module>
+                <module>protobuffer</module>
+                <module>reactor-core</module>
+                <module>rsocket</module>
+                <module>slack</module>
+
+
+                <!--  Modules from default second-->
+                <module>spring-5</module>
+                <module>spring-5-webflux</module>
+                <module>spring-5-webflux-2</module>
+                <module>spring-activiti</module>
+                <module>spring-batch-2</module>
+                <module>spring-caching-2</module>
+                <module>spring-core-2</module>
+                <module>spring-core-3</module>
+                <module>spring-core-5</module>
+                <module>spring-di-3</module>
+                <module>spring-cucumber</module>
+
+                <module>spring-kafka</module>
+
+                <module>spring-native</module>
+                <module>spring-protobuf</module>
+                <module>spring-quartz</module>
+
+                <module>spring-scheduling</module>
+
+                <module>spring-state-machine</module>
+                <module>spring-threads</module>
+                <module>tensorflow-java</module>
+                <module>xstream</module>
+                <module>webrtc</module>
             </modules>
+
+            <properties>
+                <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+                <java.version>11</java.version>
+                <java.version>11</java.version>
+            </properties>
         </profile>
 
         <profile>
@@ -1217,8 +1123,10 @@
                 <!-- <module>core-java-modules/core-java-15</module> --> <!-- uses preview features, to be decided how to handle -->
                 <!-- <module>core-java-modules/core-java-16</module> --> <!-- uses preview features, to be decided how to handle -->
                 <!-- <module>core-java-modules/core-java-17</module> --> <!-- uses preview features, to be decided how to handle -->
+                <!-- <module>core-java-modules/core-java-19</module> --> <!-- uses preview features, to be decided how to handle -->
                 <module>core-java-modules/core-java-collections-set</module>
                 <module>core-java-modules/core-java-collections-list-4</module>
+                <module>core-java-modules/core-java-collections-array-list</module>
                 <module>core-java-modules/core-java-collections-maps-4</module>
                 <module>core-java-modules/core-java-collections-maps-5</module>
                 <module>core-java-modules/core-java-concurrency-simple</module>
@@ -1237,6 +1145,7 @@
                 <module>core-java-modules/core-java-networking-3</module>
                 <module>core-java-modules/core-java-strings</module>
                 <module>core-java-modules/core-java-httpclient</module>
+                <module>spring-core-6</module>
                 <module>ddd-contexts</module>
                 <module>docker-modules</module>
                 <module>apache-httpclient-2</module>
@@ -1259,9 +1168,132 @@
                 <module>testing-modules/testing-assertions</module>
                 <module>persistence-modules/fauna</module>
                 <module>lightrun</module>
-                <module>spring-core-6</module>
                 <module>tablesaw</module>
+
+                <!-- Modules from default-first -->
+
+                <module>akka-modules</module>
+                <module>annotations</module>
+                <module>apache-httpclient</module>
+                <module>antlr</module>
+                <module>apache-kafka</module>
+                <module>apache-kafka-2</module>
+                <module>apache-olingo</module>
+
+                <module>apache-poi-2</module>
+                <module>apache-rocketmq</module>
+                <module>apache-thrift</module>
+                <module>apache-tika</module>
+
+                <module>asm</module>
+                <module>atomikos</module>
+                <module>atomix</module>
+                <module>axon</module>
+
+                <module>bazel</module>
+                <module>code-generation</module>
+                <module>ddd</module>
+                <module>discord4j</module>
+                <module>disruptor</module>
+                <module>dozer</module>
+
+                <module>dubbo</module>
+                <module>feign</module>
+                <module>google-cloud</module>
+                <module>graphql-modules</module>
+                <module>grpc</module>
+                <module>hazelcast</module>
+                <module>hystrix</module>
+                <module>jackson-simple</module>
+                <module>java-blockchain</module>
+
+                <module>java-rmi</module>
+                <module>java-spi</module>
+                <module>javax-sound</module>
+                <module>javaxval</module>
+                <module>javaxval-2</module>
+                <module>javax-validation-advanced</module>
+                <module>jgit</module>
+                <module>jib</module>
+
+                <module>java-native</module>
+                <module>jsoup</module>
+                <module>ksqldb</module>
+
+                <module>libraries-7</module>
+                <module>libraries-apache-commons</module>
+                <module>libraries-apache-commons-collections</module>
+                <module>libraries-apache-commons-io</module>
+                <module>libraries-data-2</module>
+                <module>libraries-data-io</module>
+                <module>libraries-files</module>
+                <module>libraries-http</module>
+                <module>libraries-http-2</module>
+                <module>libraries-io</module>
+                <module>libraries-primitive</module>
+                <module>libraries-rpc</module>
+                <module>libraries-server</module>
+
+                <module>lucene</module>
+                <module>mapstruct</module>
+                <module>mesos-marathon</module>
+                <module>metrics</module>
+                <module>mustache</module>
+                <module>mybatis</module>
+                <module>pdf</module>
+                <module>pdf-2</module>
+                <module>protobuffer</module>
+                <module>reactor-core</module>
+                <module>rsocket</module>
+                <module>slack</module>
+
+
+                <!--  Modules from default second-->
+
+                <module>spring-5</module>
+                <module>spring-5-webflux</module>
+                <module>spring-5-webflux-2</module>
+                <module>spring-activiti</module>
+                <module>spring-batch-2</module>
+                <module>spring-caching-2</module>
+                <module>spring-core-2</module>
+                <module>spring-core-3</module>
+                <module>spring-core-5</module>
+                <module>spring-di-3</module>
+                <module>spring-cucumber</module>
+
+                <module>spring-kafka</module>
+
+                <module>spring-native</module>
+                <module>spring-protobuf</module>
+                <module>spring-quartz</module>
+
+                <module>spring-scheduling</module>
+
+                <module>spring-state-machine</module>
+                <module>spring-threads</module>
+                <module>tensorflow-java</module>
+                <module>xstream</module>
+                <module>webrtc</module>
             </modules>
+
+            <properties>
+                <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+                <java.version>11</java.version>
+                <java.version>11</java.version>
+            </properties>
+        </profile>
+        
+        <profile>
+            <id>parents</id>
+            <modules>
+                <module>parent-boot-1</module>
+                <module>parent-boot-2</module>
+                <module>parent-spring-4</module>
+                <module>parent-spring-5</module>
+                <module>parent-java</module>
+            </modules>
+
         </profile>
     </profiles>
 

spring-5-webflux-2/src/main/java/com/baeldung/webflux/caching/ItemService.java

@@ -1,22 +1,22 @@
 package com.baeldung.webflux.caching;
 
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
 import com.github.benmanes.caffeine.cache.Caffeine;
 import com.github.benmanes.caffeine.cache.LoadingCache;
-import org.springframework.cache.annotation.Cacheable;
-import org.springframework.stereotype.Service;
-import reactor.cache.CacheMono;
+
 import reactor.core.publisher.Mono;
 
 @Service
 public class ItemService {
 
     private final ItemRepository repository;
-    private final LoadingCache<String, Object> cache;
+    private final LoadingCache<String, Mono<Item>> cache;
 
     public ItemService(ItemRepository repository) {
         this.repository = repository;
-        this.cache = Caffeine.newBuilder()
-                .build(this::getItem_withAddons);
+        this.cache = Caffeine.newBuilder().build(this::getItem_withCaffeine);
     }
 
     @Cacheable("items")
@@ -34,9 +34,7 @@ public class ItemService {
     }
 
     @Cacheable("items")
-    public Mono<Item> getItem_withAddons(String id) {
-        return CacheMono.lookup(cache.asMap(), id)
-                .onCacheMissResume(() -> repository.findById(id).cast(Object.class)).cast(Item.class);
+    public Mono<Item> getItem_withCaffeine(String id) {
+        return cache.asMap().computeIfAbsent(id, k -> repository.findById(id).cast(Item.class));
     }
-
 }

spring-5-webflux-2/src/test/java/com/baeldung/webflux/caching/MonoFluxResultCachingLiveTest.java

@@ -73,19 +73,19 @@ public void givenItem_whenGetItemIsCalled_thenMonoIsCached() {
     }
 
     @Test
-    public void givenItem_whenGetItemWithAddonsIsCalled_thenMonoResultIsCached() {
+    public void givenItem_whenGetItemWithCaffeineIsCalled_thenMonoResultIsCached() {
         Mono<Item> glass = itemService.save(new Item("glass", 1.00));
 
         String id = glass.block().get_id();
 
-        Mono<Item> mono = itemService.getItem_withAddons(id);
+        Mono<Item> mono = itemService.getItem_withCaffeine(id);
         Item item = mono.block();
 
         assertThat(item).isNotNull();
         assertThat(item.getName()).isEqualTo("glass");
         assertThat(item.getPrice()).isEqualTo(1.00);
 
-        Mono<Item> mono2 = itemService.getItem_withAddons(id);
+        Mono<Item> mono2 = itemService.getItem_withCaffeine(id);
         Item item2 = mono2.block();
 
         assertThat(item2).isNotNull();

spring-boot-modules/spring-boot-3-native/README.md

@@ -1,2 +1,3 @@
 ## Relevant Articles
 - [Native Images with Spring Boot and GraalVM](https://www.baeldung.com/spring-native-intro)
+- [Ahead of Time Optimizations in Spring 6](https://www.baeldung.com/spring-6-ahead-of-time-optimizations)

spring-boot-modules/spring-boot-data-2/src/test/java/com/baeldung/boot/readonlyrepository/BookRepository.java

@@ -2,5 +2,5 @@ package com.baeldung.boot.readonlyrepository;
 
 import org.springframework.data.repository.CrudRepository;
 
-public interface BookRepository extends BookReadOnlyRepository, CrudRepository<Book, Long> {
+public interface BookRepository extends CrudRepository<Book, Long> {
 }

spring-boot-modules/spring-boot-keycloak/pom.xml

@@ -18,10 +18,6 @@
     </parent>
 
     <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-oauth2-resource-server</artifactId>
@@ -93,12 +89,16 @@
                 <configuration>
                     <packageName>com.baeldung</packageName>
                     <sources>
-                        <source>src/main/resources/products.xsd</source>
+                        <source>/${project.basedir}/src/main/resources/products.xsd</source>
                     </sources>
 
                 </configuration>
             </plugin>
         </plugins>
     </build>
+    
+     <properties>
+        <start-class>com.baeldung.keycloak.SpringBoot</start-class>
+    </properties>
 
 </project>

spring-boot-modules/spring-boot-keycloak/src/main/java/com/baeldung/keycloak/SecurityConfig.java

@@ -30,7 +30,7 @@ class SecurityConfig {
     @Bean
     public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
         http.authorizeRequests()
-            .antMatchers("/customers*", "/users*")
+            .antMatchers("/customers*")
             .hasRole("USER")
             .anyRequest()
             .permitAll();

spring-boot-modules/spring-boot-logging-log4j2/README.md

@@ -7,3 +7,4 @@ This module contains articles about logging in Spring Boot projects with Log4j 2
 - [Logging to Graylog with Spring Boot](https://www.baeldung.com/graylog-with-spring-boot)
 - [Log Groups in Spring Boot 2.1](https://www.baeldung.com/spring-boot-log-groups)
 - [Writing Log Data to Syslog Using Log4j2](https://www.baeldung.com/log4j-to-syslog)
+- [Spring Boot Logback and Log4j2 Extensions](https://www.baeldung.com/spring-boot-logback-log4j2)

spring-boot-modules/spring-boot-mvc-birt/pom.xml

@@ -9,13 +9,11 @@
     <packaging>jar</packaging>
     <description>Module For Spring Boot Integration with BIRT</description>
 
-    <!-- this module should use the Boot parent directly to avoid inherit -->
-    <!-- the logback dependency from our other parents -->
     <parent>
-        <groupId>org.springframework.boot</groupId>
-        <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.1.RELEASE</version>
-        <relativePath /> <!-- lookup parent from repository -->
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/app/Application.java

@@ -1,19 +1,18 @@
 package com.baeldung.web.log.app;
 
-import javax.servlet.ServletRegistration;
-
 import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.security.servlet.ManagementWebSecurityAutoConfiguration;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.PropertySource;
 
-import com.baeldung.web.log.config.CustomeRequestLoggingFilter;
-
-@EnableAutoConfiguration
 @ComponentScan("com.baeldung.web.log")
 @PropertySource("application-log.properties")
-@SpringBootApplication
+@SpringBootApplication(exclude = {
+    SecurityAutoConfiguration.class,
+    ManagementWebSecurityAutoConfiguration.class
+})
 public class Application {
 
     public static void main(final String[] args) {

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/app/CachedHttpServletRequest.java

@@ -0,0 +1,30 @@
+package com.baeldung.web.log.app;
+
+import org.springframework.util.StreamUtils;
+
+import javax.servlet.ServletInputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import java.io.*;
+
+public class CachedHttpServletRequest extends HttpServletRequestWrapper {
+
+    private byte[] cachedPayload;
+
+    public CachedHttpServletRequest(HttpServletRequest request) throws IOException {
+        super(request);
+        InputStream requestInputStream = request.getInputStream();
+        this.cachedPayload = StreamUtils.copyToByteArray(requestInputStream);
+    }
+
+    @Override
+    public ServletInputStream getInputStream() {
+        return new CachedServletInputStream(this.cachedPayload);
+    }
+
+    @Override
+    public BufferedReader getReader() {
+        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(this.cachedPayload);
+        return new BufferedReader(new InputStreamReader(byteArrayInputStream));
+    }
+}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/app/CachedServletInputStream.java

@@ -0,0 +1,45 @@
+package com.baeldung.web.log.app;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.ReadListener;
+import javax.servlet.ServletInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+public class CachedServletInputStream extends ServletInputStream {
+
+    private final static Logger LOGGER = LoggerFactory.getLogger(CachedServletInputStream.class);
+    private InputStream cachedInputStream;
+
+    public CachedServletInputStream(byte[] cachedBody) {
+        this.cachedInputStream = new ByteArrayInputStream(cachedBody);
+    }
+
+    @Override
+    public boolean isFinished() {
+        try {
+            return cachedInputStream.available() == 0;
+        } catch (IOException exp) {
+            LOGGER.error(exp.getMessage());
+        }
+        return false;
+    }
+
+    @Override
+    public boolean isReady() {
+        return true;
+    }
+
+    @Override
+    public void setReadListener(ReadListener readListener) {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public int read() throws IOException {
+        return cachedInputStream.read();
+    }
+}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/app/RequestCachingFilter.java

@@ -0,0 +1,33 @@
+package com.baeldung.web.log.app;
+
+import org.apache.commons.io.IOUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+@Order(value = Ordered.HIGHEST_PRECEDENCE)
+@Component
+@WebFilter(filterName = "RequestCachingFilter", urlPatterns = "/*")
+public class RequestCachingFilter extends OncePerRequestFilter {
+
+    private final static Logger LOGGER = LoggerFactory.getLogger(RequestCachingFilter.class);
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
+      FilterChain filterChain) throws ServletException, IOException {
+        CachedHttpServletRequest cachedHttpServletRequest = new CachedHttpServletRequest(request);
+        LOGGER.info("REQUEST DATA: " + IOUtils.toString(cachedHttpServletRequest.getInputStream(), StandardCharsets.UTF_8));
+        filterChain.doFilter(cachedHttpServletRequest, response);
+    }
+}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/app/TaxiFareRequestInterceptor.java

@@ -1,44 +0,0 @@
-package com.baeldung.web.log.app;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
-import org.springframework.web.util.ContentCachingRequestWrapper;
-
-import com.baeldung.web.log.util.RequestLoggingUtil;
-
-@Component
-public class TaxiFareRequestInterceptor extends HandlerInterceptorAdapter {
-
-    private final static Logger LOGGER = LoggerFactory.getLogger(TaxiFareRequestInterceptor.class);
-
-    @Override
-    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
-        String postData;
-        HttpServletRequest requestCacheWrapperObject = null;
-        try {
-            // Uncomment to produce the stream closed issue
-            // postData = RequestLoggingUtil.getStringFromInputStream(request.getInputStream());
-
-            // To overcome request stream closed issue
-            requestCacheWrapperObject = new ContentCachingRequestWrapper(request);
-            requestCacheWrapperObject.getParameterMap();
-        } catch (Exception exception) {
-            exception.printStackTrace();
-        } finally {
-            postData = RequestLoggingUtil.readPayload(requestCacheWrapperObject);
-            LOGGER.info("REQUEST DATA: " + postData);
-        }
-        return true;
-    }
-
-    @Override
-    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
-        LOGGER.info("RESPONSE: " + response.getStatus());
-    }
-
-}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/config/CustomWebAppInitializer.java

@@ -1,27 +0,0 @@
-package com.baeldung.web.log.config;
-
-import javax.servlet.ServletContext;
-import javax.servlet.ServletException;
-import javax.servlet.ServletRegistration;
-
-import org.springframework.web.context.ContextLoaderListener;
-import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
-import org.springframework.web.servlet.DispatcherServlet;
-import org.springframework.web.WebApplicationInitializer;
-
-public class CustomWebAppInitializer implements WebApplicationInitializer {
-    
-    @Override
-    public void onStartup(ServletContext container) throws ServletException {
-
-        AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
-        context.setConfigLocation("com.baeldung.web.log");
-        container.addListener(new ContextLoaderListener(context));
-
-        ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(context));
-        dispatcher.setLoadOnStartup(1);
-        dispatcher.addMapping("/"); 
-
-        container.addFilter("customRequestLoggingFilter", CustomeRequestLoggingFilter.class).addMappingForServletNames(null, false, "dispatcher");
-    }
-}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/config/CustomeRequestLoggingFilter.java

@@ -1,12 +0,0 @@
-package com.baeldung.web.log.config;
-
-import org.springframework.web.filter.CommonsRequestLoggingFilter;
-
-public class CustomeRequestLoggingFilter extends CommonsRequestLoggingFilter {
-
-  public CustomeRequestLoggingFilter() {
-      super.setIncludeQueryString(true);
-      super.setIncludePayload(true);
-      super.setMaxPayloadLength(10000);
-  }
-}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/config/RequestLoggingFilterConfig.java

@@ -14,7 +14,7 @@ public class RequestLoggingFilterConfig {
         filter.setIncludePayload(true);
         filter.setMaxPayloadLength(10000);
         filter.setIncludeHeaders(false);
-        filter.setAfterMessagePrefix("REQUEST DATA : ");
+        filter.setAfterMessagePrefix("REQUEST DATA: ");
         return filter;
     }
 }

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/config/TaxiFareMVCConfig.java

@@ -1,19 +0,0 @@
-package com.baeldung.web.log.config;
-
-import com.baeldung.web.log.app.TaxiFareRequestInterceptor;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
-import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-
-@Configuration
-public class TaxiFareMVCConfig implements WebMvcConfigurer {
-
-    @Autowired
-    private TaxiFareRequestInterceptor taxiFareRequestInterceptor;
-
-    @Override
-    public void addInterceptors(InterceptorRegistry registry) {
-        registry.addInterceptor(taxiFareRequestInterceptor).addPathPatterns("/taxifare/*/");
-    }
-}

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/web/log/util/RequestLoggingUtil.java

@@ -1,38 +0,0 @@
-package com.baeldung.web.log.util;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.StringWriter;
-
-import javax.servlet.http.HttpServletRequest;
-
-import org.apache.commons.io.IOUtils;
-import org.springframework.web.util.ContentCachingRequestWrapper;
-import org.springframework.web.util.WebUtils;
-
-public class RequestLoggingUtil {
-
-    public static String getStringFromInputStream(InputStream is) {
-        StringWriter writer = new StringWriter();
-        String encoding = "UTF-8";
-        try {
-            IOUtils.copy(is, writer, encoding);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        return writer.toString();
-    }
-
-    public static String readPayload(final HttpServletRequest request) throws IOException {
-        String payloadData = null;
-        ContentCachingRequestWrapper contentCachingRequestWrapper = WebUtils.getNativeRequest(request, ContentCachingRequestWrapper.class);
-        if (null != contentCachingRequestWrapper) {
-            byte[] buf = contentCachingRequestWrapper.getContentAsByteArray();
-            if (buf.length > 0) {
-                payloadData = new String(buf, 0, buf.length, contentCachingRequestWrapper.getCharacterEncoding());
-            }
-        }
-        return payloadData;
-    }
-
-}

spring-boot-modules/spring-boot-runtime/src/main/resources/logback.xml

@@ -7,6 +7,10 @@
         </encoder>
     </appender>
 
+    <logger name="org.springframework.web.filter.CommonsRequestLoggingFilter">
+        <level value="DEBUG" />
+    </logger>
+
     <root level="INFO">
         <appender-ref ref="STDOUT" />
     </root>

spring-boot-modules/spring-boot-runtime/src/test/java/com/baeldung/web/controller/TaxiFareControllerIntegrationTest.java

@@ -1,23 +1,19 @@
 package com.baeldung.web.controller;
 
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.equalTo;
-
+import com.baeldung.web.log.app.Application;
+import com.baeldung.web.log.data.TaxiRide;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.web.client.TestRestTemplate;
-import org.springframework.context.annotation.Configuration;
-import org.springframework.boot.web.server.LocalServerPort;
+import org.springframework.boot.test.web.server.LocalServerPort;
 import org.springframework.test.context.junit4.SpringRunner;
-import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 
-import com.baeldung.web.log.app.Application;
-import com.baeldung.web.log.data.TaxiRide;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
 
 @RunWith(SpringRunner.class)
-@SpringBootTest(classes = { Application.class, TaxiFareControllerIntegrationTest.SecurityConfig.class}, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@SpringBootTest(classes = { Application.class}, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class TaxiFareControllerIntegrationTest {
     
     @LocalServerPort
@@ -25,8 +21,6 @@ public class TaxiFareControllerIntegrationTest {
     
     @Test
     public void givenRequest_whenFetchTaxiFareRateCard_thanOK() {
-
-        System.out.println(port);
         String URL = "http://localhost:" + port + "/spring-rest";
         TestRestTemplate testRestTemplate = new TestRestTemplate();
         TaxiRide taxiRide = new TaxiRide(true, 10l);
@@ -37,16 +31,4 @@ public class TaxiFareControllerIntegrationTest {
         assertThat(fare, equalTo("200"));
     }
 
-    @Configuration
-    static class SecurityConfig extends WebSecurityConfigurerAdapter {
-        @Override
-        protected void configure(HttpSecurity http) throws Exception {
-            System.out.println("security being set");
-            http
-                    .authorizeRequests()
-                    .anyRequest().permitAll()
-                    .and()
-                    .csrf().disable();
-        }
-    }
 }

spring-cloud-modules/pom.xml

@@ -55,6 +55,7 @@
         <module>spring-cloud-data-flow</module>
         <module>spring-cloud-sleuth</module>
         <module>spring-cloud-openfeign-2</module>
+	<module>spring-cloud-open-telemetry</module>
     </modules>
 
     <build>

spring-cloud-modules/spring-cloud-archaius/spring-cloud-archaius-additionalsources/pom.xml

@@ -3,7 +3,7 @@
     xmlns="http://maven.apache.org/POM/4.0.0"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>spring-cloud-archaius-additional-sources-simple</artifactId>
+    <artifactId>spring-cloud-archaius-additionalsources</artifactId>
     <version>1.0.0-SNAPSHOT</version>
     <name>spring-cloud-archaius-additionalsources</name>
     <packaging>jar</packaging>

spring-cloud-modules/spring-cloud-open-telemetry/docker-compose.yml

@@ -0,0 +1,30 @@
+version: "4.0"
+
+services:
+  product-service:
+    platform: linux/x86_64
+    build: spring-cloud-open-telemetry1/
+    ports:
+      - "8080:8080"
+
+  price-service:
+    platform: linux/x86_64
+    build: spring-cloud-open-telemetry2/
+    ports:
+      - "8081"
+
+  jaeger-service:
+    image: jaegertracing/all-in-one:latest
+    ports:
+      - "16686:16686"
+      - "14250"
+
+  collector:
+    image: otel/opentelemetry-collector:0.47.0
+    command: [ "--config=/etc/otel-collector-config.yml" ]
+    volumes:
+      - ./otel-config.yml:/etc/otel-collector-config.yml
+    ports:
+      - "4317:4317"
+    depends_on:
+      - jaeger-service

spring-cloud-modules/spring-cloud-open-telemetry/otel-config.yml

@@ -0,0 +1,23 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+      http:
+
+processors:
+  batch:
+
+exporters:
+  logging:
+    logLevel: debug
+  jaeger:
+    endpoint: jaeger-service:14250
+    tls:
+      insecure: true
+
+service:
+  pipelines:
+    traces:
+      receivers: [ otlp ]
+      processors: [ batch ]
+      exporters: [ logging, jaeger ]

spring-cloud-modules/spring-cloud-open-telemetry/pom.xml

@@ -0,0 +1,22 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung.spring.cloud</groupId>
+    <artifactId>spring-cloud-open-telemetry</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>spring-cloud-open-telemetry</name>
+    <packaging>pom</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-modules</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <modules>
+        <module>spring-cloud-open-telemetry1</module>
+        <module>spring-cloud-open-telemetry2</module>
+    </modules>
+
+</project>

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/Dockerfile

@@ -0,0 +1,7 @@
+FROM adoptopenjdk/openjdk11:alpine
+
+COPY target/spring-cloud-open-telemetry1-1.0.0-SNAPSHOT.jar spring-cloud-open-telemetry.jar
+
+EXPOSE 8081
+
+ENTRYPOINT ["java","-jar","/spring-cloud-open-telemetry.jar"]

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/pom.xml

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-cloud-open-telemetry1</artifactId>
+    <groupId>com.baeldung.spring.cloud</groupId>
+    <version>1.0.0-SNAPSHOT</version>
+    <name>spring-cloud-open-telemetry1</name>
+    <packaging>jar</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud-open-telemetry</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${spring-boot-dependencies.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${release.train.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-sleuth-otel-dependencies</artifactId>
+                <version>${spring-cloud-sleuth-otel.version}</version>
+                <scope>import</scope>
+                <type>pom</type>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-sleuth</artifactId>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.springframework.cloud</groupId>
+                    <artifactId>spring-cloud-sleuth-brave</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-sleuth-otel-autoconfigure</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.opentelemetry</groupId>
+            <artifactId>opentelemetry-exporter-otlp-trace</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.grpc</groupId>
+            <artifactId>grpc-okhttp</artifactId>
+            <version>${grpc-okhttp.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit-jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+    <repositories>
+        <repository>
+            <id>spring-milestones</id>
+            <url>https://repo.spring.io/milestone</url>
+        </repository>
+    </repositories>
+    <pluginRepositories>
+        <pluginRepository>
+            <id>spring-milestones</id>
+            <url>https://repo.spring.io/milestone</url>
+        </pluginRepository>
+    </pluginRepositories>
+
+    <properties>
+        <spring-boot-dependencies.version>2.5.7</spring-boot-dependencies.version>
+        <release.train.version>2020.0.4</release.train.version>
+        <spring-cloud-sleuth-otel.version>1.0.0-M12</spring-cloud-sleuth-otel.version>
+        <grpc-okhttp.version>1.42.1</grpc-okhttp.version>
+    </properties>
+
+</project>

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/main/java/com/baeldung/opentelemetry/ProductApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.opentelemetry;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ProductApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ProductApplication.class, args);
+    }
+}

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/main/java/com/baeldung/opentelemetry/api/client/PriceClient.java

@@ -0,0 +1,34 @@
+package com.baeldung.opentelemetry.api.client;
+
+import com.baeldung.opentelemetry.model.Price;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.client.RestTemplate;
+
+@Component
+public class PriceClient {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(PriceClient.class);
+
+    private final RestTemplate restTemplate;
+
+    @Autowired
+    public PriceClient(RestTemplate restTemplate) {
+        this.restTemplate = restTemplate;
+    }
+
+    @Value("${priceClient.baseUrl}")
+    private String baseUrl;
+
+    public Price getPrice(@PathVariable("id") long productId){
+        LOGGER.info("Fetching Price Details With Product Id {}", productId);
+        String url = String.format("%s/price/%d", baseUrl, productId);
+        ResponseEntity<Price> price = restTemplate.getForEntity(url, Price.class);
+        return price.getBody();
+    }
+}

spring-cloud-modules/spring-cloud-open-telemetry/spring-cloud-open-telemetry1/src/main/java/com/baeldung/opentelemetry/configuration/RestConfiguration.java

@@ -0,0 +1,15 @@
+package com.baeldung.opentelemetry.configuration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+
+@Configuration
+public class RestConfiguration {
+
+    @Bean
+    public RestTemplate restTemplate() {
+        return new RestTemplate();
+    }
+
+}